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Finding the Fourth Proportional to 21,693.73, 32,503.45 and 11,839.92

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Solution

The fourth proportional to 21,693.73, 32,503.45 and 11,839.92 is: 17,739.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,693.73 : 32,503.45 = 11,839.92 : x
  2. Step 2: Convert to fraction form
    21,693.73/32,503.45 = 11,839.92/x
  3. Step 3: Cross multiply
    21,693.73x = 32,503.45 × 11,839.92
  4. Step 4: Simplify right side
    21,693.73x = 384,838,247.72
  5. Step 5: Solve for x
    x = 384,838,247.72/21,693.73
  6. Step 6: Final answer
    x = 17,739.61

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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.