Home / 11,150.38-15,387.50-6,434.66

Finding the Fourth Proportional to 11,150.38, 15,387.50 and 6,434.66

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Solution

The fourth proportional to 11,150.38, 15,387.50 and 6,434.66 is: 8,879.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.38 : 15,387.50 = 6,434.66 : x
  2. Step 2: Convert to fraction form
    11,150.38/15,387.50 = 6,434.66/x
  3. Step 3: Cross multiply
    11,150.38x = 15,387.50 × 6,434.66
  4. Step 4: Simplify right side
    11,150.38x = 99,013,298.75
  5. Step 5: Solve for x
    x = 99,013,298.75/11,150.38
  6. Step 6: Final answer
    x = 8,879.82

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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.