Home / 20,425.64-28,183.01-11,923.90

Finding the Fourth Proportional to 20,425.64, 28,183.01 and 11,923.90

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Solution

The fourth proportional to 20,425.64, 28,183.01 and 11,923.90 is: 16,452.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.64 : 28,183.01 = 11,923.90 : x
  2. Step 2: Convert to fraction form
    20,425.64/28,183.01 = 11,923.90/x
  3. Step 3: Cross multiply
    20,425.64x = 28,183.01 × 11,923.90
  4. Step 4: Simplify right side
    20,425.64x = 336,051,560.68
  5. Step 5: Solve for x
    x = 336,051,560.68/20,425.64
  6. Step 6: Final answer
    x = 16,452.44

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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.