Home / 20,255.87-30,383.85-7,105.25

Finding the Fourth Proportional to 20,255.87, 30,383.85 and 7,105.25

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Solution

The fourth proportional to 20,255.87, 30,383.85 and 7,105.25 is: 10,657.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.87 : 30,383.85 = 7,105.25 : x
  2. Step 2: Convert to fraction form
    20,255.87/30,383.85 = 7,105.25/x
  3. Step 3: Cross multiply
    20,255.87x = 30,383.85 × 7,105.25
  4. Step 4: Simplify right side
    20,255.87x = 215,884,850.21
  5. Step 5: Solve for x
    x = 215,884,850.21/20,255.87
  6. Step 6: Final answer
    x = 10,657.89

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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.