The value of n in the proportion is 16. The answer is 16 because to find the difference you first take 28 and divide it by 7 which gives you 4. To check and make sure that 4 is right you would multiply 7 by 4 which gives you 28. You then would take 4 and multiply it by 4 since that is the difference. 4 times 4 gives you your answer of 16.
The area of a triangle can be found using the formula 1/2bh, where the variable b represents the value of the base and the variable h represents the value of the height.
