Home / 20,743.26-28,625.45-11,311.62

Finding the Fourth Proportional to 20,743.26, 28,625.45 and 11,311.62

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Solution

The fourth proportional to 20,743.26, 28,625.45 and 11,311.62 is: 15,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.26 : 28,625.45 = 11,311.62 : x
  2. Step 2: Convert to fraction form
    20,743.26/28,625.45 = 11,311.62/x
  3. Step 3: Cross multiply
    20,743.26x = 28,625.45 × 11,311.62
  4. Step 4: Simplify right side
    20,743.26x = 323,800,156.17
  5. Step 5: Solve for x
    x = 323,800,156.17/20,743.26
  6. Step 6: Final answer
    x = 15,609.90

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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.