Home / 20,134.70-30,171.26-8,441.54

Finding the Fourth Proportional to 20,134.70, 30,171.26 and 8,441.54

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Solution

The fourth proportional to 20,134.70, 30,171.26 and 8,441.54 is: 12,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.70 : 30,171.26 = 8,441.54 : x
  2. Step 2: Convert to fraction form
    20,134.70/30,171.26 = 8,441.54/x
  3. Step 3: Cross multiply
    20,134.70x = 30,171.26 × 8,441.54
  4. Step 4: Simplify right side
    20,134.70x = 254,691,898.14
  5. Step 5: Solve for x
    x = 254,691,898.14/20,134.70
  6. Step 6: Final answer
    x = 12,649.40

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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.