Finding the Fourth Proportional to 28,745,448.08, 39,669,318.68 and 15,693,257.12
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Solution
The fourth proportional to 28,745,448.08, 39,669,318.68 and 15,693,257.12 is: 21,657,022.56
Step by Step Solution
- Step 1: Write the proportion equation
28,745,448.08 : 39,669,318.68 = 15,693,257.12 : x - Step 2: Convert to fraction form
28,745,448.08/39,669,318.68 = 15,693,257.12/x - Step 3: Cross multiply
28,745,448.08x = 39,669,318.68 × 15,693,257.12 - Step 4: Simplify right side
28,745,448.08x = 622,540,817,543,646.12 - Step 5: Solve for x
x = 622,540,817,543,646.12/28,745,448.08 - Step 6: Final answer
x = 21,657,022.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.