Home / 38,930.28-58,402.68-12,631.56

Finding the Fourth Proportional to 38,930.28, 58,402.68 and 12,631.56

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Solution

The fourth proportional to 38,930.28, 58,402.68 and 12,631.56 is: 18,949.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,930.28 : 58,402.68 = 12,631.56 : x
  2. Step 2: Convert to fraction form
    38,930.28/58,402.68 = 12,631.56/x
  3. Step 3: Cross multiply
    38,930.28x = 58,402.68 × 12,631.56
  4. Step 4: Simplify right side
    38,930.28x = 737,716,956.58
  5. Step 5: Solve for x
    x = 737,716,956.58/38,930.28
  6. Step 6: Final answer
    x = 18,949.70

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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.