Home / 38,742.48-58,123.20-12,449.76

Finding the Fourth Proportional to 38,742.48, 58,123.20 and 12,449.76

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Solution

The fourth proportional to 38,742.48, 58,123.20 and 12,449.76 is: 18,677.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,742.48 : 58,123.20 = 12,449.76 : x
  2. Step 2: Convert to fraction form
    38,742.48/58,123.20 = 12,449.76/x
  3. Step 3: Cross multiply
    38,742.48x = 58,123.20 × 12,449.76
  4. Step 4: Simplify right side
    38,742.48x = 723,619,890.43
  5. Step 5: Solve for x
    x = 723,619,890.43/38,742.48
  6. Step 6: Final answer
    x = 18,677.69

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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.