Home / 10,917.10-15,067.92-6,439.18

Finding the Fourth Proportional to 10,917.10, 15,067.92 and 6,439.18

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Solution

The fourth proportional to 10,917.10, 15,067.92 and 6,439.18 is: 8,887.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.10 : 15,067.92 = 6,439.18 : x
  2. Step 2: Convert to fraction form
    10,917.10/15,067.92 = 6,439.18/x
  3. Step 3: Cross multiply
    10,917.10x = 15,067.92 × 6,439.18
  4. Step 4: Simplify right side
    10,917.10x = 97,025,049.11
  5. Step 5: Solve for x
    x = 97,025,049.11/10,917.10
  6. Step 6: Final answer
    x = 8,887.44

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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.