Home / 12,272.20-18,408.30-8,585.80

Finding the Fourth Proportional to 12,272.20, 18,408.30 and 8,585.80

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Solution

The fourth proportional to 12,272.20, 18,408.30 and 8,585.80 is: 12,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.20 : 18,408.30 = 8,585.80 : x
  2. Step 2: Convert to fraction form
    12,272.20/18,408.30 = 8,585.80/x
  3. Step 3: Cross multiply
    12,272.20x = 18,408.30 × 8,585.80
  4. Step 4: Simplify right side
    12,272.20x = 158,049,982.14
  5. Step 5: Solve for x
    x = 158,049,982.14/12,272.20
  6. Step 6: Final answer
    x = 12,878.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.