Seems like it should be a basic lookup function: https://support.office.com/en-us/art...__toc309306714

Where you want the "just larger" value, rather than the "just smaller" value, I would use the MATCH() function for the lookup, followed by the INDEX() function to return the desired value.

If you are allowed to sort the data in descending order, then this will be striaghtforward with -1 as the MATCH() functions third argument. =MATCH(lookup value,lookup column,-1)

If you are not allowed to sort the data in descending order (naturally assuming the data will be sorted in ascending order), then you use +1 for the third argument, then add one to the result of the MATCH() function (=MATCH(lookup value,lookup column,1)+1)