Home / 13,919.82-20,879.76-5,144.52

Finding the Fourth Proportional to 13,919.82, 20,879.76 and 5,144.52

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Solution

The fourth proportional to 13,919.82, 20,879.76 and 5,144.52 is: 7,716.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.82 : 20,879.76 = 5,144.52 : x
  2. Step 2: Convert to fraction form
    13,919.82/20,879.76 = 5,144.52/x
  3. Step 3: Cross multiply
    13,919.82x = 20,879.76 × 5,144.52
  4. Step 4: Simplify right side
    13,919.82x = 107,416,342.92
  5. Step 5: Solve for x
    x = 107,416,342.92/13,919.82
  6. Step 6: Final answer
    x = 7,716.79

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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.