Home / 38,731.96-58,105.50-12,434.68

Finding the Fourth Proportional to 38,731.96, 58,105.50 and 12,434.68

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Solution

The fourth proportional to 38,731.96, 58,105.50 and 12,434.68 is: 18,654.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,731.96 : 58,105.50 = 12,434.68 : x
  2. Step 2: Convert to fraction form
    38,731.96/58,105.50 = 12,434.68/x
  3. Step 3: Cross multiply
    38,731.96x = 58,105.50 × 12,434.68
  4. Step 4: Simplify right side
    38,731.96x = 722,523,298.74
  5. Step 5: Solve for x
    x = 722,523,298.74/38,731.96
  6. Step 6: Final answer
    x = 18,654.45

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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.