Home / 13,728.82-20,590.08-8,183.74

Finding the Fourth Proportional to 13,728.82, 20,590.08 and 8,183.74

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Solution

The fourth proportional to 13,728.82, 20,590.08 and 8,183.74 is: 12,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.82 : 20,590.08 = 8,183.74 : x
  2. Step 2: Convert to fraction form
    13,728.82/20,590.08 = 8,183.74/x
  3. Step 3: Cross multiply
    13,728.82x = 20,590.08 × 8,183.74
  4. Step 4: Simplify right side
    13,728.82x = 168,503,861.30
  5. Step 5: Solve for x
    x = 168,503,861.30/13,728.82
  6. Step 6: Final answer
    x = 12,273.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.