Home / 10,919.59-15,067.78-6,138.56

Finding the Fourth Proportional to 10,919.59, 15,067.78 and 6,138.56

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Solution

The fourth proportional to 10,919.59, 15,067.78 and 6,138.56 is: 8,470.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.59 : 15,067.78 = 6,138.56 : x
  2. Step 2: Convert to fraction form
    10,919.59/15,067.78 = 6,138.56/x
  3. Step 3: Cross multiply
    10,919.59x = 15,067.78 × 6,138.56
  4. Step 4: Simplify right side
    10,919.59x = 92,494,493.92
  5. Step 5: Solve for x
    x = 92,494,493.92/10,919.59
  6. Step 6: Final answer
    x = 8,470.51

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1.5x scale

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.