Home / 11,416.92-15,755.06-6,381.18

Finding the Fourth Proportional to 11,416.92, 15,755.06 and 6,381.18

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Solution

The fourth proportional to 11,416.92, 15,755.06 and 6,381.18 is: 8,805.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,416.92 : 15,755.06 = 6,381.18 : x
  2. Step 2: Convert to fraction form
    11,416.92/15,755.06 = 6,381.18/x
  3. Step 3: Cross multiply
    11,416.92x = 15,755.06 × 6,381.18
  4. Step 4: Simplify right side
    11,416.92x = 100,535,841.86
  5. Step 5: Solve for x
    x = 100,535,841.86/11,416.92
  6. Step 6: Final answer
    x = 8,805.86

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Half scale
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Double scale
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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.