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Finding the Fourth Proportional to 18,234.70, 25,163.88 and 9,851.20

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Solution

The fourth proportional to 18,234.70, 25,163.88 and 9,851.20 is: 13,594.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,234.70 : 25,163.88 = 9,851.20 : x
  2. Step 2: Convert to fraction form
    18,234.70/25,163.88 = 9,851.20/x
  3. Step 3: Cross multiply
    18,234.70x = 25,163.88 × 9,851.20
  4. Step 4: Simplify right side
    18,234.70x = 247,894,414.66
  5. Step 5: Solve for x
    x = 247,894,414.66/18,234.70
  6. Step 6: Final answer
    x = 13,594.65

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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.