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Finding the Fourth Proportional to 20,243.76, 30,367.48 and 5,452.76

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Solution

The fourth proportional to 20,243.76, 30,367.48 and 5,452.76 is: 8,179.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.76 : 30,367.48 = 5,452.76 : x
  2. Step 2: Convert to fraction form
    20,243.76/30,367.48 = 5,452.76/x
  3. Step 3: Cross multiply
    20,243.76x = 30,367.48 × 5,452.76
  4. Step 4: Simplify right side
    20,243.76x = 165,586,580.24
  5. Step 5: Solve for x
    x = 165,586,580.24/20,243.76
  6. Step 6: Final answer
    x = 8,179.64

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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.