Home / 12,126.96-18,190.44-3,807.71

Finding the Fourth Proportional to 12,126.96, 18,190.44 and 3,807.71

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Solution

The fourth proportional to 12,126.96, 18,190.44 and 3,807.71 is: 5,711.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.96 : 18,190.44 = 3,807.71 : x
  2. Step 2: Convert to fraction form
    12,126.96/18,190.44 = 3,807.71/x
  3. Step 3: Cross multiply
    12,126.96x = 18,190.44 × 3,807.71
  4. Step 4: Simplify right side
    12,126.96x = 69,263,897.55
  5. Step 5: Solve for x
    x = 69,263,897.55/12,126.96
  6. Step 6: Final answer
    x = 5,711.56

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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.