Home / 18,286.11-25,234.82-9,902.61

Finding the Fourth Proportional to 18,286.11, 25,234.82 and 9,902.61

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Solution

The fourth proportional to 18,286.11, 25,234.82 and 9,902.61 is: 13,665.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.11 : 25,234.82 = 9,902.61 : x
  2. Step 2: Convert to fraction form
    18,286.11/25,234.82 = 9,902.61/x
  3. Step 3: Cross multiply
    18,286.11x = 25,234.82 × 9,902.61
  4. Step 4: Simplify right side
    18,286.11x = 249,890,568.50
  5. Step 5: Solve for x
    x = 249,890,568.50/18,286.11
  6. Step 6: Final answer
    x = 13,665.59

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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.