Home / 10,919.20-15,067.92-6,725.92

Finding the Fourth Proportional to 10,919.20, 15,067.92 and 6,725.92

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Solution

The fourth proportional to 10,919.20, 15,067.92 and 6,725.92 is: 9,281.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.20 : 15,067.92 = 6,725.92 : x
  2. Step 2: Convert to fraction form
    10,919.20/15,067.92 = 6,725.92/x
  3. Step 3: Cross multiply
    10,919.20x = 15,067.92 × 6,725.92
  4. Step 4: Simplify right side
    10,919.20x = 101,345,624.49
  5. Step 5: Solve for x
    x = 101,345,624.49/10,919.20
  6. Step 6: Final answer
    x = 9,281.41

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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.