Home / 12,084.60-18,126.90-7,151.70

Finding the Fourth Proportional to 12,084.60, 18,126.90 and 7,151.70

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Solution

The fourth proportional to 12,084.60, 18,126.90 and 7,151.70 is: 10,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.60 : 18,126.90 = 7,151.70 : x
  2. Step 2: Convert to fraction form
    12,084.60/18,126.90 = 7,151.70/x
  3. Step 3: Cross multiply
    12,084.60x = 18,126.90 × 7,151.70
  4. Step 4: Simplify right side
    12,084.60x = 129,638,150.73
  5. Step 5: Solve for x
    x = 129,638,150.73/12,084.60
  6. Step 6: Final answer
    x = 10,727.55

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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.