Finding the Fourth Proportional to 21,480,837.37, 29,643,553.92 and 11,691,351.75
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Solution
The fourth proportional to 21,480,837.37, 29,643,553.92 and 11,691,351.75 is: 16,134,064.52
Step by Step Solution
- Step 1: Write the proportion equation
21,480,837.37 : 29,643,553.92 = 11,691,351.75 : x - Step 2: Convert to fraction form
21,480,837.37/29,643,553.92 = 11,691,351.75/x - Step 3: Cross multiply
21,480,837.37x = 29,643,553.92 × 11,691,351.75 - Step 4: Simplify right side
21,480,837.37x = 346,573,215,998,811.38 - Step 5: Solve for x
x = 346,573,215,998,811.38/21,480,837.37 - Step 6: Final answer
x = 16,134,064.52
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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.