Home / 20,245.60-30,371.58-5,455.10

Finding the Fourth Proportional to 20,245.60, 30,371.58 and 5,455.10

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Solution

The fourth proportional to 20,245.60, 30,371.58 and 5,455.10 is: 8,183.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.60 : 30,371.58 = 5,455.10 : x
  2. Step 2: Convert to fraction form
    20,245.60/30,371.58 = 5,455.10/x
  3. Step 3: Cross multiply
    20,245.60x = 30,371.58 × 5,455.10
  4. Step 4: Simplify right side
    20,245.60x = 165,680,006.06
  5. Step 5: Solve for x
    x = 165,680,006.06/20,245.60
  6. Step 6: Final answer
    x = 8,183.51

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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.