Question

what number must be subtracted from each of the number 31 19 13 and 10 so that they are in proportion​

Answer 1

Answer:

Step-by-step explanation:

31 - 19 = 12

19 - 13 = 6

13 - 10 = 3

12 + 6 + 3 = 21

If the sum of three numbers is 21 then the average of such numbers is 21/3 = 7

The number is 7

31 -7 = 24

19 - 7 = 12

13 - 7 = 6

10 – 7 = 3

To find the proportion (that is, ratio) divide each number (that is: 24, 12, 6 and 3) by 3.

24:12:6:3 = 8:4:2:1

Answer 2

Answer:

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