Home / 38,988.78-58,496.76-12,338.88

Finding the Fourth Proportional to 38,988.78, 58,496.76 and 12,338.88

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Solution

The fourth proportional to 38,988.78, 58,496.76 and 12,338.88 is: 18,512.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,988.78 : 58,496.76 = 12,338.88 : x
  2. Step 2: Convert to fraction form
    38,988.78/58,496.76 = 12,338.88/x
  3. Step 3: Cross multiply
    38,988.78x = 58,496.76 × 12,338.88
  4. Step 4: Simplify right side
    38,988.78x = 721,784,502.03
  5. Step 5: Solve for x
    x = 721,784,502.03/38,988.78
  6. Step 6: Final answer
    x = 18,512.62

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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.