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Finding the Fourth Proportional to 20,367.88, 30,481.98 and 14,134.96

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Solution

The fourth proportional to 20,367.88, 30,481.98 and 14,134.96 is: 21,153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,367.88 : 30,481.98 = 14,134.96 : x
  2. Step 2: Convert to fraction form
    20,367.88/30,481.98 = 14,134.96/x
  3. Step 3: Cross multiply
    20,367.88x = 30,481.98 × 14,134.96
  4. Step 4: Simplify right side
    20,367.88x = 430,861,568.02
  5. Step 5: Solve for x
    x = 430,861,568.02/20,367.88
  6. Step 6: Final answer
    x = 21,153.97

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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.