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Finding the Fourth Proportional to 15,100.91, 20,835.89 and 9,132.44

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Solution

The fourth proportional to 15,100.91, 20,835.89 and 9,132.44 is: 12,600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.91 : 20,835.89 = 9,132.44 : x
  2. Step 2: Convert to fraction form
    15,100.91/20,835.89 = 9,132.44/x
  3. Step 3: Cross multiply
    15,100.91x = 20,835.89 × 9,132.44
  4. Step 4: Simplify right side
    15,100.91x = 190,282,365.43
  5. Step 5: Solve for x
    x = 190,282,365.43/15,100.91
  6. Step 6: Final answer
    x = 12,600.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.