Home / 28,789.56-43,183.32-20,321.34

Finding the Fourth Proportional to 28,789.56, 43,183.32 and 20,321.34

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Solution

The fourth proportional to 28,789.56, 43,183.32 and 20,321.34 is: 30,481.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,789.56 : 43,183.32 = 20,321.34 : x
  2. Step 2: Convert to fraction form
    28,789.56/43,183.32 = 20,321.34/x
  3. Step 3: Cross multiply
    28,789.56x = 43,183.32 × 20,321.34
  4. Step 4: Simplify right side
    28,789.56x = 877,542,928.05
  5. Step 5: Solve for x
    x = 877,542,928.05/28,789.56
  6. Step 6: Final answer
    x = 30,481.29

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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.