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Finding the Fourth Proportional to 18,087.92, 27,057 and 16,982

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Solution

The fourth proportional to 18,087.92, 27,057 and 16,982 is: 25,402.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.92 : 27,057 = 16,982 : x
  2. Step 2: Convert to fraction form
    18,087.92/27,057 = 16,982/x
  3. Step 3: Cross multiply
    18,087.92x = 27,057 × 16,982
  4. Step 4: Simplify right side
    18,087.92x = 459,481,974
  5. Step 5: Solve for x
    x = 459,481,974/18,087.92
  6. Step 6: Final answer
    x = 25,402.70

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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.