Home / 38,691.60-58,091.19-19,985.46

Finding the Fourth Proportional to 38,691.60, 58,091.19 and 19,985.46

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Solution

The fourth proportional to 38,691.60, 58,091.19 and 19,985.46 is: 30,005.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,691.60 : 58,091.19 = 19,985.46 : x
  2. Step 2: Convert to fraction form
    38,691.60/58,091.19 = 19,985.46/x
  3. Step 3: Cross multiply
    38,691.60x = 58,091.19 × 19,985.46
  4. Step 4: Simplify right side
    38,691.60x = 1,160,979,154.10
  5. Step 5: Solve for x
    x = 1,160,979,154.10/38,691.60
  6. Step 6: Final answer
    x = 30,005.97

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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.