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Finding the Fourth Proportional to 20,793.72, 28,695.30 and 11,841.22

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Solution

The fourth proportional to 20,793.72, 28,695.30 and 11,841.22 is: 16,340.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.72 : 28,695.30 = 11,841.22 : x
  2. Step 2: Convert to fraction form
    20,793.72/28,695.30 = 11,841.22/x
  3. Step 3: Cross multiply
    20,793.72x = 28,695.30 × 11,841.22
  4. Step 4: Simplify right side
    20,793.72x = 339,787,360.27
  5. Step 5: Solve for x
    x = 339,787,360.27/20,793.72
  6. Step 6: Final answer
    x = 16,340.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.