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Finding the Fourth Proportional to 20,239.92, 27,932.04 and 11,859.12

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Solution

The fourth proportional to 20,239.92, 27,932.04 and 11,859.12 is: 16,366.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.92 : 27,932.04 = 11,859.12 : x
  2. Step 2: Convert to fraction form
    20,239.92/27,932.04 = 11,859.12/x
  3. Step 3: Cross multiply
    20,239.92x = 27,932.04 × 11,859.12
  4. Step 4: Simplify right side
    20,239.92x = 331,249,414.20
  5. Step 5: Solve for x
    x = 331,249,414.20/20,239.92
  6. Step 6: Final answer
    x = 16,366.14

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1.5x scale

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.