Finding the Fourth Proportional to 27,695,890.98, 38,218,327.20 and 15,305,836.14
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Solution
The fourth proportional to 27,695,890.98, 38,218,327.20 and 15,305,836.14 is: 21,120,947.29
Step by Step Solution
- Step 1: Write the proportion equation
27,695,890.98 : 38,218,327.20 = 15,305,836.14 : x - Step 2: Convert to fraction form
27,695,890.98/38,218,327.20 = 15,305,836.14/x - Step 3: Cross multiply
27,695,890.98x = 38,218,327.20 × 15,305,836.14 - Step 4: Simplify right side
27,695,890.98x = 584,963,453,668,105.12 - Step 5: Solve for x
x = 584,963,453,668,105.12/27,695,890.98 - Step 6: Final answer
x = 21,120,947.29
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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.