Home / 20,481.66-28,265.85-12,522.60

Finding the Fourth Proportional to 20,481.66, 28,265.85 and 12,522.60

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Solution

The fourth proportional to 20,481.66, 28,265.85 and 12,522.60 is: 17,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.66 : 28,265.85 = 12,522.60 : x
  2. Step 2: Convert to fraction form
    20,481.66/28,265.85 = 12,522.60/x
  3. Step 3: Cross multiply
    20,481.66x = 28,265.85 × 12,522.60
  4. Step 4: Simplify right side
    20,481.66x = 353,961,933.21
  5. Step 5: Solve for x
    x = 353,961,933.21/20,481.66
  6. Step 6: Final answer
    x = 17,281.90

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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.