Home / 21,872.20-32,808.46-9,381.70

Finding the Fourth Proportional to 21,872.20, 32,808.46 and 9,381.70

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Solution

The fourth proportional to 21,872.20, 32,808.46 and 9,381.70 is: 14,072.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,872.20 : 32,808.46 = 9,381.70 : x
  2. Step 2: Convert to fraction form
    21,872.20/32,808.46 = 9,381.70/x
  3. Step 3: Cross multiply
    21,872.20x = 32,808.46 × 9,381.70
  4. Step 4: Simplify right side
    21,872.20x = 307,799,129.18
  5. Step 5: Solve for x
    x = 307,799,129.18/21,872.20
  6. Step 6: Final answer
    x = 14,072.62

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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.