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Finding the Fourth Proportional to 20,013.91, 29,987.98 and 6,859.10

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Solution

The fourth proportional to 20,013.91, 29,987.98 and 6,859.10 is: 10,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,013.91 : 29,987.98 = 6,859.10 : x
  2. Step 2: Convert to fraction form
    20,013.91/29,987.98 = 6,859.10/x
  3. Step 3: Cross multiply
    20,013.91x = 29,987.98 × 6,859.10
  4. Step 4: Simplify right side
    20,013.91x = 205,690,553.62
  5. Step 5: Solve for x
    x = 205,690,553.62/20,013.91
  6. Step 6: Final answer
    x = 10,277.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.