Home / 11,489.92-15,856.37-6,454.15

Finding the Fourth Proportional to 11,489.92, 15,856.37 and 6,454.15

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Solution

The fourth proportional to 11,489.92, 15,856.37 and 6,454.15 is: 8,906.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.92 : 15,856.37 = 6,454.15 : x
  2. Step 2: Convert to fraction form
    11,489.92/15,856.37 = 6,454.15/x
  3. Step 3: Cross multiply
    11,489.92x = 15,856.37 × 6,454.15
  4. Step 4: Simplify right side
    11,489.92x = 102,339,390.44
  5. Step 5: Solve for x
    x = 102,339,390.44/11,489.92
  6. Step 6: Final answer
    x = 8,906.88

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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.