Home / 10,879.72-15,013.48-6,163.88

Finding the Fourth Proportional to 10,879.72, 15,013.48 and 6,163.88

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Solution

The fourth proportional to 10,879.72, 15,013.48 and 6,163.88 is: 8,505.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.72 : 15,013.48 = 6,163.88 : x
  2. Step 2: Convert to fraction form
    10,879.72/15,013.48 = 6,163.88/x
  3. Step 3: Cross multiply
    10,879.72x = 15,013.48 × 6,163.88
  4. Step 4: Simplify right side
    10,879.72x = 92,541,289.10
  5. Step 5: Solve for x
    x = 92,541,289.10/10,879.72
  6. Step 6: Final answer
    x = 8,505.85

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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.