Home / 20,318.82-30,482.90-8,474.66

Finding the Fourth Proportional to 20,318.82, 30,482.90 and 8,474.66

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Solution

The fourth proportional to 20,318.82, 30,482.90 and 8,474.66 is: 12,713.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.82 : 30,482.90 = 8,474.66 : x
  2. Step 2: Convert to fraction form
    20,318.82/30,482.90 = 8,474.66/x
  3. Step 3: Cross multiply
    20,318.82x = 30,482.90 × 8,474.66
  4. Step 4: Simplify right side
    20,318.82x = 258,332,213.31
  5. Step 5: Solve for x
    x = 258,332,213.31/20,318.82
  6. Step 6: Final answer
    x = 12,713.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.