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Finding the Fourth Proportional to 21,863.52, 32,795.28 and 6,281.15

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Solution

The fourth proportional to 21,863.52, 32,795.28 and 6,281.15 is: 9,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.52 : 32,795.28 = 6,281.15 : x
  2. Step 2: Convert to fraction form
    21,863.52/32,795.28 = 6,281.15/x
  3. Step 3: Cross multiply
    21,863.52x = 32,795.28 × 6,281.15
  4. Step 4: Simplify right side
    21,863.52x = 205,991,909.00
  5. Step 5: Solve for x
    x = 205,991,909.00/21,863.52
  6. Step 6: Final answer
    x = 9,421.72

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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.