Home / 20,322.46-30,489.17-8,472.29

Finding the Fourth Proportional to 20,322.46, 30,489.17 and 8,472.29

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Solution

The fourth proportional to 20,322.46, 30,489.17 and 8,472.29 is: 12,710.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.46 : 30,489.17 = 8,472.29 : x
  2. Step 2: Convert to fraction form
    20,322.46/30,489.17 = 8,472.29/x
  3. Step 3: Cross multiply
    20,322.46x = 30,489.17 × 8,472.29
  4. Step 4: Simplify right side
    20,322.46x = 258,313,123.96
  5. Step 5: Solve for x
    x = 258,313,123.96/20,322.46
  6. Step 6: Final answer
    x = 12,710.72

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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.