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Finding the Fourth Proportional to 20,244.79, 30,367.19 and 10,871.92

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Solution

The fourth proportional to 20,244.79, 30,367.19 and 10,871.92 is: 16,307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,244.79 : 30,367.19 = 10,871.92 : x
  2. Step 2: Convert to fraction form
    20,244.79/30,367.19 = 10,871.92/x
  3. Step 3: Cross multiply
    20,244.79x = 30,367.19 × 10,871.92
  4. Step 4: Simplify right side
    20,244.79x = 330,149,508.47
  5. Step 5: Solve for x
    x = 330,149,508.47/20,244.79
  6. Step 6: Final answer
    x = 16,307.88

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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.