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Finding the Fourth Proportional to 20,179.92, 30,251.52 and 10,314.12

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Solution

The fourth proportional to 20,179.92, 30,251.52 and 10,314.12 is: 15,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.92 : 30,251.52 = 10,314.12 : x
  2. Step 2: Convert to fraction form
    20,179.92/30,251.52 = 10,314.12/x
  3. Step 3: Cross multiply
    20,179.92x = 30,251.52 × 10,314.12
  4. Step 4: Simplify right side
    20,179.92x = 312,017,807.46
  5. Step 5: Solve for x
    x = 312,017,807.46/20,179.92
  6. Step 6: Final answer
    x = 15,461.80

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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.