Calculated column using an aggregation of another column

Hello.

This is a very simplified version of the my actual report to illustrate the problem I need help with.

These slicers affect the table:

Example of what I want to get:

I think I understand that the scope/context at the row level is only the same row, so the calculations I try to use (using lots of combinations of filter functions) didn't work. I've tried using measures, they show the correct value on visuals but were useless on calculated columns, where my attempts often ended  in circular dependencies.
In the actual case there are multiple tables related to each other, which makes things even more complicated for me. This is an example of a computed column that I can't find a solution for:

I think that the solution to the simplified case that I am presenting can lead me to solve the problems in the actual report. 

Please, I need some help.

Thanks,