Home / 20,743.05-28,627.11-11,793.36

Finding the Fourth Proportional to 20,743.05, 28,627.11 and 11,793.36

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Solution

The fourth proportional to 20,743.05, 28,627.11 and 11,793.36 is: 16,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.05 : 28,627.11 = 11,793.36 : x
  2. Step 2: Convert to fraction form
    20,743.05/28,627.11 = 11,793.36/x
  3. Step 3: Cross multiply
    20,743.05x = 28,627.11 × 11,793.36
  4. Step 4: Simplify right side
    20,743.05x = 337,609,813.99
  5. Step 5: Solve for x
    x = 337,609,813.99/20,743.05
  6. Step 6: Final answer
    x = 16,275.80

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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.