Finding the Fourth Proportional to 20,789,805.68, 28,689,764.04 and 11,497,767.32
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Solution
The fourth proportional to 20,789,805.68, 28,689,764.04 and 11,497,767.32 is: 15,866,826.10
Step by Step Solution
- Step 1: Write the proportion equation
20,789,805.68 : 28,689,764.04 = 11,497,767.32 : x - Step 2: Convert to fraction form
20,789,805.68/28,689,764.04 = 11,497,767.32/x - Step 3: Cross multiply
20,789,805.68x = 28,689,764.04 × 11,497,767.32 - Step 4: Simplify right side
20,789,805.68x = 329,868,231,397,623.19 - Step 5: Solve for x
x = 329,868,231,397,623.19/20,789,805.68 - Step 6: Final answer
x = 15,866,826.10
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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.