Home / 11,269.92-15,543.36-8,613.12

Finding the Fourth Proportional to 11,269.92, 15,543.36 and 8,613.12

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Solution

The fourth proportional to 11,269.92, 15,543.36 and 8,613.12 is: 11,879.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,269.92 : 15,543.36 = 8,613.12 : x
  2. Step 2: Convert to fraction form
    11,269.92/15,543.36 = 8,613.12/x
  3. Step 3: Cross multiply
    11,269.92x = 15,543.36 × 8,613.12
  4. Step 4: Simplify right side
    11,269.92x = 133,876,824.88
  5. Step 5: Solve for x
    x = 133,876,824.88/11,269.92
  6. Step 6: Final answer
    x = 11,879.13

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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.