Hello, Jeff,
Let's set four consecutive odd numbers by setting the first number to x, which we must stipulate must be odd. x = odd number. Four consecutive odd numbers would be represented by the series:
x
x+2
x+4
x+6
Their sum is equal to 4x + 12, which I'll set to "y."
4x + 12 = y
Then solve for y = 216
4x + 12 = 216
4x = 204
x = 51
The four consecutive odd numbers are thus 51, 53, 55, and 57, which add to 216.
Bob