Home / 11,818.92-16,331.85-8,626.80

Finding the Fourth Proportional to 11,818.92, 16,331.85 and 8,626.80

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Solution

The fourth proportional to 11,818.92, 16,331.85 and 8,626.80 is: 11,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.92 : 16,331.85 = 8,626.80 : x
  2. Step 2: Convert to fraction form
    11,818.92/16,331.85 = 8,626.80/x
  3. Step 3: Cross multiply
    11,818.92x = 16,331.85 × 8,626.80
  4. Step 4: Simplify right side
    11,818.92x = 140,891,603.58
  5. Step 5: Solve for x
    x = 140,891,603.58/11,818.92
  6. Step 6: Final answer
    x = 11,920.85

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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.