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Finding the Fourth Proportional to 21,744.62, 32,606.65 and 8,423.85

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Solution

The fourth proportional to 21,744.62, 32,606.65 and 8,423.85 is: 12,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,744.62 : 32,606.65 = 8,423.85 : x
  2. Step 2: Convert to fraction form
    21,744.62/32,606.65 = 8,423.85/x
  3. Step 3: Cross multiply
    21,744.62x = 32,606.65 × 8,423.85
  4. Step 4: Simplify right side
    21,744.62x = 274,673,614.02
  5. Step 5: Solve for x
    x = 274,673,614.02/21,744.62
  6. Step 6: Final answer
    x = 12,631.80

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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.