Home / 20,141.38-30,212.08-7,658.52

Finding the Fourth Proportional to 20,141.38, 30,212.08 and 7,658.52

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Solution

The fourth proportional to 20,141.38, 30,212.08 and 7,658.52 is: 11,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.38 : 30,212.08 = 7,658.52 : x
  2. Step 2: Convert to fraction form
    20,141.38/30,212.08 = 7,658.52/x
  3. Step 3: Cross multiply
    20,141.38x = 30,212.08 × 7,658.52
  4. Step 4: Simplify right side
    20,141.38x = 231,379,799.78
  5. Step 5: Solve for x
    x = 231,379,799.78/20,141.38
  6. Step 6: Final answer
    x = 11,487.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.