Home / 12,100.60-18,150.90-7,167.70

Finding the Fourth Proportional to 12,100.60, 18,150.90 and 7,167.70

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Solution

The fourth proportional to 12,100.60, 18,150.90 and 7,167.70 is: 10,751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100.60 : 18,150.90 = 7,167.70 : x
  2. Step 2: Convert to fraction form
    12,100.60/18,150.90 = 7,167.70/x
  3. Step 3: Cross multiply
    12,100.60x = 18,150.90 × 7,167.70
  4. Step 4: Simplify right side
    12,100.60x = 130,100,205.93
  5. Step 5: Solve for x
    x = 130,100,205.93/12,100.60
  6. Step 6: Final answer
    x = 10,751.55

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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.