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Finding the Fourth Proportional to 21,731.77, 32,600.40 and 6,149.40

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Solution

The fourth proportional to 21,731.77, 32,600.40 and 6,149.40 is: 9,224.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,731.77 : 32,600.40 = 6,149.40 : x
  2. Step 2: Convert to fraction form
    21,731.77/32,600.40 = 6,149.40/x
  3. Step 3: Cross multiply
    21,731.77x = 32,600.40 × 6,149.40
  4. Step 4: Simplify right side
    21,731.77x = 200,472,899.76
  5. Step 5: Solve for x
    x = 200,472,899.76/21,731.77
  6. Step 6: Final answer
    x = 9,224.88

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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.