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Finding the Fourth Proportional to 17,871.20, 26,786.73 and 8,388.17

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Solution

The fourth proportional to 17,871.20, 26,786.73 and 8,388.17 is: 12,572.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,871.20 : 26,786.73 = 8,388.17 : x
  2. Step 2: Convert to fraction form
    17,871.20/26,786.73 = 8,388.17/x
  3. Step 3: Cross multiply
    17,871.20x = 26,786.73 × 8,388.17
  4. Step 4: Simplify right side
    17,871.20x = 224,691,644.98
  5. Step 5: Solve for x
    x = 224,691,644.98/17,871.20
  6. Step 6: Final answer
    x = 12,572.83

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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.