Home / 31,183.62-43,080.44-20,453.96

Finding the Fourth Proportional to 31,183.62, 43,080.44 and 20,453.96

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Solution

The fourth proportional to 31,183.62, 43,080.44 and 20,453.96 is: 28,257.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,183.62 : 43,080.44 = 20,453.96 : x
  2. Step 2: Convert to fraction form
    31,183.62/43,080.44 = 20,453.96/x
  3. Step 3: Cross multiply
    31,183.62x = 43,080.44 × 20,453.96
  4. Step 4: Simplify right side
    31,183.62x = 881,165,278.87
  5. Step 5: Solve for x
    x = 881,165,278.87/31,183.62
  6. Step 6: Final answer
    x = 28,257.31

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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.