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Finding the Fourth Proportional to 21,489.20, 32,224.20 and 8,337.20

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Solution

The fourth proportional to 21,489.20, 32,224.20 and 8,337.20 is: 12,502.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.20 : 32,224.20 = 8,337.20 : x
  2. Step 2: Convert to fraction form
    21,489.20/32,224.20 = 8,337.20/x
  3. Step 3: Cross multiply
    21,489.20x = 32,224.20 × 8,337.20
  4. Step 4: Simplify right side
    21,489.20x = 268,659,600.24
  5. Step 5: Solve for x
    x = 268,659,600.24/21,489.20
  6. Step 6: Final answer
    x = 12,502.08

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1.5x scale

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.