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Finding the Fourth Proportional to 12,481.87, 18,697.69 and 5,914.39

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Solution

The fourth proportional to 12,481.87, 18,697.69 and 5,914.39 is: 8,859.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.87 : 18,697.69 = 5,914.39 : x
  2. Step 2: Convert to fraction form
    12,481.87/18,697.69 = 5,914.39/x
  3. Step 3: Cross multiply
    12,481.87x = 18,697.69 × 5,914.39
  4. Step 4: Simplify right side
    12,481.87x = 110,585,430.76
  5. Step 5: Solve for x
    x = 110,585,430.76/12,481.87
  6. Step 6: Final answer
    x = 8,859.68

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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.