Home / 22,591.68-31,176.76-13,161.12

Finding the Fourth Proportional to 22,591.68, 31,176.76 and 13,161.12

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Solution

The fourth proportional to 22,591.68, 31,176.76 and 13,161.12 is: 18,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,591.68 : 31,176.76 = 13,161.12 : x
  2. Step 2: Convert to fraction form
    22,591.68/31,176.76 = 13,161.12/x
  3. Step 3: Cross multiply
    22,591.68x = 31,176.76 × 13,161.12
  4. Step 4: Simplify right side
    22,591.68x = 410,321,079.57
  5. Step 5: Solve for x
    x = 410,321,079.57/22,591.68
  6. Step 6: Final answer
    x = 18,162.49

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Half scale
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Double scale
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Similar ratio
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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.