Home / 20,882.34-31,320.63-7,553.88

Finding the Fourth Proportional to 20,882.34, 31,320.63 and 7,553.88

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Solution

The fourth proportional to 20,882.34, 31,320.63 and 7,553.88 is: 11,329.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.34 : 31,320.63 = 7,553.88 : x
  2. Step 2: Convert to fraction form
    20,882.34/31,320.63 = 7,553.88/x
  3. Step 3: Cross multiply
    20,882.34x = 31,320.63 × 7,553.88
  4. Step 4: Simplify right side
    20,882.34x = 236,592,280.54
  5. Step 5: Solve for x
    x = 236,592,280.54/20,882.34
  6. Step 6: Final answer
    x = 11,329.78

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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.