Home / 12,266.20-18,399.30-9,155.80

Finding the Fourth Proportional to 12,266.20, 18,399.30 and 9,155.80

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Solution

The fourth proportional to 12,266.20, 18,399.30 and 9,155.80 is: 13,733.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,266.20 : 18,399.30 = 9,155.80 : x
  2. Step 2: Convert to fraction form
    12,266.20/18,399.30 = 9,155.80/x
  3. Step 3: Cross multiply
    12,266.20x = 18,399.30 × 9,155.80
  4. Step 4: Simplify right side
    12,266.20x = 168,460,310.94
  5. Step 5: Solve for x
    x = 168,460,310.94/12,266.20
  6. Step 6: Final answer
    x = 13,733.70

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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.