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Finding the Fourth Proportional to 21,899.43, 32,873.72 and 8,760.96

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Solution

The fourth proportional to 21,899.43, 32,873.72 and 8,760.96 is: 13,151.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.43 : 32,873.72 = 8,760.96 : x
  2. Step 2: Convert to fraction form
    21,899.43/32,873.72 = 8,760.96/x
  3. Step 3: Cross multiply
    21,899.43x = 32,873.72 × 8,760.96
  4. Step 4: Simplify right side
    21,899.43x = 288,005,302.17
  5. Step 5: Solve for x
    x = 288,005,302.17/21,899.43
  6. Step 6: Final answer
    x = 13,151.27

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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.