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Finding the Fourth Proportional to 18,625, 25,717.86 and 16,294.12

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Solution

The fourth proportional to 18,625, 25,717.86 and 16,294.12 is: 22,499.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625 : 25,717.86 = 16,294.12 : x
  2. Step 2: Convert to fraction form
    18,625/25,717.86 = 16,294.12/x
  3. Step 3: Cross multiply
    18,625x = 25,717.86 × 16,294.12
  4. Step 4: Simplify right side
    18,625x = 419,049,896.98
  5. Step 5: Solve for x
    x = 419,049,896.98/18,625
  6. Step 6: Final answer
    x = 22,499.32

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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.