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Finding the Fourth Proportional to 21,641.52, 32,462.48 and 8,495.20

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Solution

The fourth proportional to 21,641.52, 32,462.48 and 8,495.20 is: 12,742.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,641.52 : 32,462.48 = 8,495.20 : x
  2. Step 2: Convert to fraction form
    21,641.52/32,462.48 = 8,495.20/x
  3. Step 3: Cross multiply
    21,641.52x = 32,462.48 × 8,495.20
  4. Step 4: Simplify right side
    21,641.52x = 275,775,260.10
  5. Step 5: Solve for x
    x = 275,775,260.10/21,641.52
  6. Step 6: Final answer
    x = 12,742.88

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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.