Finding the Fourth Proportional to 15,685,942.28, 21,647,251.12 and 8,716,593.80
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Solution
The fourth proportional to 15,685,942.28, 21,647,251.12 and 8,716,593.80 is: 12,029,261.08
Step by Step Solution
- Step 1: Write the proportion equation
15,685,942.28 : 21,647,251.12 = 8,716,593.80 : x - Step 2: Convert to fraction form
15,685,942.28/21,647,251.12 = 8,716,593.80/x - Step 3: Cross multiply
15,685,942.28x = 21,647,251.12 × 8,716,593.80 - Step 4: Simplify right side
15,685,942.28x = 188,690,294,899,635.09 - Step 5: Solve for x
x = 188,690,294,899,635.09/15,685,942.28 - Step 6: Final answer
x = 12,029,261.08
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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.