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Finding the Fourth Proportional to 18,663, 25,757.82 and 11,589.72

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Solution

The fourth proportional to 18,663, 25,757.82 and 11,589.72 is: 15,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663 : 25,757.82 = 11,589.72 : x
  2. Step 2: Convert to fraction form
    18,663/25,757.82 = 11,589.72/x
  3. Step 3: Cross multiply
    18,663x = 25,757.82 × 11,589.72
  4. Step 4: Simplify right side
    18,663x = 298,525,921.61
  5. Step 5: Solve for x
    x = 298,525,921.61/18,663
  6. Step 6: Final answer
    x = 15,995.60

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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.