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Finding the Fourth Proportional to 20,463.30, 30,662.14 and 18,495

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Solution

The fourth proportional to 20,463.30, 30,662.14 and 18,495 is: 27,712.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.30 : 30,662.14 = 18,495 : x
  2. Step 2: Convert to fraction form
    20,463.30/30,662.14 = 18,495/x
  3. Step 3: Cross multiply
    20,463.30x = 30,662.14 × 18,495
  4. Step 4: Simplify right side
    20,463.30x = 567,096,279.30
  5. Step 5: Solve for x
    x = 567,096,279.30/20,463.30
  6. Step 6: Final answer
    x = 27,712.85

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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.