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Finding the Fourth Proportional to 17,892.76, 26,843.98 and 12,731.40

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Solution

The fourth proportional to 17,892.76, 26,843.98 and 12,731.40 is: 19,100.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,892.76 : 26,843.98 = 12,731.40 : x
  2. Step 2: Convert to fraction form
    17,892.76/26,843.98 = 12,731.40/x
  3. Step 3: Cross multiply
    17,892.76x = 26,843.98 × 12,731.40
  4. Step 4: Simplify right side
    17,892.76x = 341,761,446.97
  5. Step 5: Solve for x
    x = 341,761,446.97/17,892.76
  6. Step 6: Final answer
    x = 19,100.54

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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.