Home / 20,171.70-30,257.56-6,131.86

Finding the Fourth Proportional to 20,171.70, 30,257.56 and 6,131.86

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Solution

The fourth proportional to 20,171.70, 30,257.56 and 6,131.86 is: 9,197.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.70 : 30,257.56 = 6,131.86 : x
  2. Step 2: Convert to fraction form
    20,171.70/30,257.56 = 6,131.86/x
  3. Step 3: Cross multiply
    20,171.70x = 30,257.56 × 6,131.86
  4. Step 4: Simplify right side
    20,171.70x = 185,535,121.86
  5. Step 5: Solve for x
    x = 185,535,121.86/20,171.70
  6. Step 6: Final answer
    x = 9,197.79

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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.