Home / 38,435.13-57,654.23-12,139.88

Finding the Fourth Proportional to 38,435.13, 57,654.23 and 12,139.88

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Solution

The fourth proportional to 38,435.13, 57,654.23 and 12,139.88 is: 18,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,435.13 : 57,654.23 = 12,139.88 : x
  2. Step 2: Convert to fraction form
    38,435.13/57,654.23 = 12,139.88/x
  3. Step 3: Cross multiply
    38,435.13x = 57,654.23 × 12,139.88
  4. Step 4: Simplify right side
    38,435.13x = 699,915,084.72
  5. Step 5: Solve for x
    x = 699,915,084.72/38,435.13
  6. Step 6: Final answer
    x = 18,210.30

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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.