Home / 20,556.12-28,372.92-11,608.86

Finding the Fourth Proportional to 20,556.12, 28,372.92 and 11,608.86

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Solution

The fourth proportional to 20,556.12, 28,372.92 and 11,608.86 is: 16,023.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.12 : 28,372.92 = 11,608.86 : x
  2. Step 2: Convert to fraction form
    20,556.12/28,372.92 = 11,608.86/x
  3. Step 3: Cross multiply
    20,556.12x = 28,372.92 × 11,608.86
  4. Step 4: Simplify right side
    20,556.12x = 329,377,114.21
  5. Step 5: Solve for x
    x = 329,377,114.21/20,556.12
  6. Step 6: Final answer
    x = 16,023.32

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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.