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Finding the Fourth Proportional to 18,553.52, 25,581.30 and 12,892.97

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Solution

The fourth proportional to 18,553.52, 25,581.30 and 12,892.97 is: 17,776.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,553.52 : 25,581.30 = 12,892.97 : x
  2. Step 2: Convert to fraction form
    18,553.52/25,581.30 = 12,892.97/x
  3. Step 3: Cross multiply
    18,553.52x = 25,581.30 × 12,892.97
  4. Step 4: Simplify right side
    18,553.52x = 329,818,933.46
  5. Step 5: Solve for x
    x = 329,818,933.46/18,553.52
  6. Step 6: Final answer
    x = 17,776.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.