Home / 21,671,678.48-29,906,757.92-11,881,961.38

Finding the Fourth Proportional to 21,671,678.48, 29,906,757.92 and 11,881,961.38

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Solution

The fourth proportional to 21,671,678.48, 29,906,757.92 and 11,881,961.38 is: 16,397,019.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671,678.48 : 29,906,757.92 = 11,881,961.38 : x
  2. Step 2: Convert to fraction form
    21,671,678.48/29,906,757.92 = 11,881,961.38/x
  3. Step 3: Cross multiply
    21,671,678.48x = 29,906,757.92 × 11,881,961.38
  4. Step 4: Simplify right side
    21,671,678.48x = 355,350,942,397,505.50
  5. Step 5: Solve for x
    x = 355,350,942,397,505.50/21,671,678.48
  6. Step 6: Final answer
    x = 16,397,019.86

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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.