Home / 42,930.20-64,387.91-11,340.61

Finding the Fourth Proportional to 42,930.20, 64,387.91 and 11,340.61

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Solution

The fourth proportional to 42,930.20, 64,387.91 and 11,340.61 is: 17,008.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,930.20 : 64,387.91 = 11,340.61 : x
  2. Step 2: Convert to fraction form
    42,930.20/64,387.91 = 11,340.61/x
  3. Step 3: Cross multiply
    42,930.20x = 64,387.91 × 11,340.61
  4. Step 4: Simplify right side
    42,930.20x = 730,198,043.41
  5. Step 5: Solve for x
    x = 730,198,043.41/42,930.20
  6. Step 6: Final answer
    x = 17,008.96

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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.