Home / 13,691.09-20,524.32-4,919.87

Finding the Fourth Proportional to 13,691.09, 20,524.32 and 4,919.87

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Solution

The fourth proportional to 13,691.09, 20,524.32 and 4,919.87 is: 7,375.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.09 : 20,524.32 = 4,919.87 : x
  2. Step 2: Convert to fraction form
    13,691.09/20,524.32 = 4,919.87/x
  3. Step 3: Cross multiply
    13,691.09x = 20,524.32 × 4,919.87
  4. Step 4: Simplify right side
    13,691.09x = 100,976,883.62
  5. Step 5: Solve for x
    x = 100,976,883.62/13,691.09
  6. Step 6: Final answer
    x = 7,375.37

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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.