Home / 20,781,834.32-28,678,972.92-11,614,476.80

Finding the Fourth Proportional to 20,781,834.32, 28,678,972.92 and 11,614,476.80

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Solution

The fourth proportional to 20,781,834.32, 28,678,972.92 and 11,614,476.80 is: 16,028,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,834.32 : 28,678,972.92 = 11,614,476.80 : x
  2. Step 2: Convert to fraction form
    20,781,834.32/28,678,972.92 = 11,614,476.80/x
  3. Step 3: Cross multiply
    20,781,834.32x = 28,678,972.92 × 11,614,476.80
  4. Step 4: Simplify right side
    20,781,834.32x = 333,091,265,627,168.31
  5. Step 5: Solve for x
    x = 333,091,265,627,168.31/20,781,834.32
  6. Step 6: Final answer
    x = 16,028,001.21

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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.