Home / 20,404.62-28,158.90-11,452.82

Finding the Fourth Proportional to 20,404.62, 28,158.90 and 11,452.82

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Solution

The fourth proportional to 20,404.62, 28,158.90 and 11,452.82 is: 15,805.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.62 : 28,158.90 = 11,452.82 : x
  2. Step 2: Convert to fraction form
    20,404.62/28,158.90 = 11,452.82/x
  3. Step 3: Cross multiply
    20,404.62x = 28,158.90 × 11,452.82
  4. Step 4: Simplify right side
    20,404.62x = 322,498,813.10
  5. Step 5: Solve for x
    x = 322,498,813.10/20,404.62
  6. Step 6: Final answer
    x = 15,805.19

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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.