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Finding the Fourth Proportional to 21,371.52, 32,063.73 and 6,379.12

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Solution

The fourth proportional to 21,371.52, 32,063.73 and 6,379.12 is: 9,570.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.52 : 32,063.73 = 6,379.12 : x
  2. Step 2: Convert to fraction form
    21,371.52/32,063.73 = 6,379.12/x
  3. Step 3: Cross multiply
    21,371.52x = 32,063.73 × 6,379.12
  4. Step 4: Simplify right side
    21,371.52x = 204,538,365.90
  5. Step 5: Solve for x
    x = 204,538,365.90/21,371.52
  6. Step 6: Final answer
    x = 9,570.61

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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.