Average Line on a Chart, based on how many months are left

underz

New Member
Joined
Jul 9, 2019
Messages
1
Hi All,

TL;DR: Need to figure out how to formulate the remaining sales dollars required based on how many selling months are left, based on what month it is, and put the remaining sales dollars required as an average line in a chart.

- description

I can get the average line on the chart no problem, however the formula to get what I want is where I am having trouble.

Customers are required to hit their own sales levels based on agreements we have in our loyalty program. 12 months to hit say $140,000 in sales.

I would like our sales managers to be able to filter by the customer they want and get a snapshot of where their customer is currently sitting in a specific month.

For my example, Oct 1 to June 30th have been tallied & charted, and the last 3 months would be an 'average line' based on the remaining 3 values. How would I write the formula to average out the remaining dollars required based on how many months are left? There is a month cell that says the month.

Oct 1 - June 30th = $134,000
Last 3 months would need an average of $2,000 a month to hit the $140,000 goal.

I've uploaded my excel, and the drawn in red line starting at row 32 "Current Sales" is the chart I need help with.

Column W, X and Y are the ones that would be needed to populate the average line.
http://s000.tinyupload.com/download.php?file_id=52305502221853812137&t=5230550222185381213778243
 

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