Home / 21,385.13-32,049.41-15,481.76

Finding the Fourth Proportional to 21,385.13, 32,049.41 and 15,481.76

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Solution

The fourth proportional to 21,385.13, 32,049.41 and 15,481.76 is: 23,202.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.13 : 32,049.41 = 15,481.76 : x
  2. Step 2: Convert to fraction form
    21,385.13/32,049.41 = 15,481.76/x
  3. Step 3: Cross multiply
    21,385.13x = 32,049.41 × 15,481.76
  4. Step 4: Simplify right side
    21,385.13x = 496,181,036.11
  5. Step 5: Solve for x
    x = 496,181,036.11/21,385.13
  6. Step 6: Final answer
    x = 23,202.16

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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.