Home / 20,882.55-28,817.82-11,932.86

Finding the Fourth Proportional to 20,882.55, 28,817.82 and 11,932.86

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Solution

The fourth proportional to 20,882.55, 28,817.82 and 11,932.86 is: 16,467.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.55 : 28,817.82 = 11,932.86 : x
  2. Step 2: Convert to fraction form
    20,882.55/28,817.82 = 11,932.86/x
  3. Step 3: Cross multiply
    20,882.55x = 28,817.82 × 11,932.86
  4. Step 4: Simplify right side
    20,882.55x = 343,879,011.57
  5. Step 5: Solve for x
    x = 343,879,011.57/20,882.55
  6. Step 6: Final answer
    x = 16,467.29

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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.