Now there are four numbers. Take any three of them and add them together. The sum is 22, 24, 27 and 20 respectively. What are the four numbers?

Now there are four numbers. Take any three of them and add them together. The sum is 22, 24, 27 and 20 respectively. What are the four numbers?

The sum of the four numbers is (22 + 24 + 27 + 20) / 3 = 31
31-22=9
31-24=7
31-27=4
31-20=11
So the four numbers are 4, 7, 9 and 11