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Finding the Fourth Proportional to 18,191.98, 25,102.90 and 10,234.05

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Solution

The fourth proportional to 18,191.98, 25,102.90 and 10,234.05 is: 14,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.98 : 25,102.90 = 10,234.05 : x
  2. Step 2: Convert to fraction form
    18,191.98/25,102.90 = 10,234.05/x
  3. Step 3: Cross multiply
    18,191.98x = 25,102.90 × 10,234.05
  4. Step 4: Simplify right side
    18,191.98x = 256,904,333.75
  5. Step 5: Solve for x
    x = 256,904,333.75/18,191.98
  6. Step 6: Final answer
    x = 14,121.85

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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.