Home / 11,115.27-15,344.65-8,591.68

Finding the Fourth Proportional to 11,115.27, 15,344.65 and 8,591.68

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Solution

The fourth proportional to 11,115.27, 15,344.65 and 8,591.68 is: 11,860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.27 : 15,344.65 = 8,591.68 : x
  2. Step 2: Convert to fraction form
    11,115.27/15,344.65 = 8,591.68/x
  3. Step 3: Cross multiply
    11,115.27x = 15,344.65 × 8,591.68
  4. Step 4: Simplify right side
    11,115.27x = 131,836,322.51
  5. Step 5: Solve for x
    x = 131,836,322.51/11,115.27
  6. Step 6: Final answer
    x = 11,860.83

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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.