Pull value from a cell that corresponds to checked box on different column [G.Sheets]

Hi all, i've scoured the internet and have had no luck. I am hoping you guys can help. I am doing this in Google Sheet so hopefully some of you may know. I am trying to display the data/value from a cell that corresponds to a checked box from a different column and display into a new cell. I've tried indexing and filter and I've tried a sumif to go through the checkedbox if true but no luck. I'll attach an image so it's easier to understand. So the formula needs to scan the E column, for example say in row 1. So E1:E to scan through entire column for check (true value) and the latest checked box, the K1:K column balance should display in cell where the formula will sit. In this sample, it should display the value 50.75.