What must be added to the numbers `6 ,10 ,14 and 22` so that they are in proportion ?

What must be added to the number 6,10,14 and 22 so that they are in proportion?

What must be added to the numbers 7,16,43 and 79, so that they became proportional?

What number must be added to each of the numbers 7,11 and 19 so that the resulting numbers may be in continued proportion? 3 b.-3 c.4 d.-4

What must be added to each of the numbers 3, 7, 8 and 16 so that resulting numbers are in proportion ?

What least number must be subtracted from each of the numbers 14, 17, 34 and 42 so that the remainders may be proportional ?

What must be subtracted from each of the numbers 23, 40, 57 and 108 so that the remainders are in proportion ?

Which of the following numbers should be added to 11, 15, 17 and 23 so that they are in proportion?