Home / 11,680.92-16,118.20-6,645.12

Finding the Fourth Proportional to 11,680.92, 16,118.20 and 6,645.12

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Solution

The fourth proportional to 11,680.92, 16,118.20 and 6,645.12 is: 9,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.92 : 16,118.20 = 6,645.12 : x
  2. Step 2: Convert to fraction form
    11,680.92/16,118.20 = 6,645.12/x
  3. Step 3: Cross multiply
    11,680.92x = 16,118.20 × 6,645.12
  4. Step 4: Simplify right side
    11,680.92x = 107,107,373.18
  5. Step 5: Solve for x
    x = 107,107,373.18/11,680.92
  6. Step 6: Final answer
    x = 9,169.43

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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.