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Finding the Fourth Proportional to 15,221.25, 20,966.28 and 10,737.14

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Solution

The fourth proportional to 15,221.25, 20,966.28 and 10,737.14 is: 14,789.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.25 : 20,966.28 = 10,737.14 : x
  2. Step 2: Convert to fraction form
    15,221.25/20,966.28 = 10,737.14/x
  3. Step 3: Cross multiply
    15,221.25x = 20,966.28 × 10,737.14
  4. Step 4: Simplify right side
    15,221.25x = 225,117,778.81
  5. Step 5: Solve for x
    x = 225,117,778.81/15,221.25
  6. Step 6: Final answer
    x = 14,789.70

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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.