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Finding the Fourth Proportional to 18,663, 25,754.94 and 10,279.50

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Solution

The fourth proportional to 18,663, 25,754.94 and 10,279.50 is: 14,185.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663 : 25,754.94 = 10,279.50 : x
  2. Step 2: Convert to fraction form
    18,663/25,754.94 = 10,279.50/x
  3. Step 3: Cross multiply
    18,663x = 25,754.94 × 10,279.50
  4. Step 4: Simplify right side
    18,663x = 264,747,905.73
  5. Step 5: Solve for x
    x = 264,747,905.73/18,663
  6. Step 6: Final answer
    x = 14,185.71

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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.