Home / 20,255.06-30,385.62-7,105.11

Finding the Fourth Proportional to 20,255.06, 30,385.62 and 7,105.11

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Solution

The fourth proportional to 20,255.06, 30,385.62 and 7,105.11 is: 10,658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.06 : 30,385.62 = 7,105.11 : x
  2. Step 2: Convert to fraction form
    20,255.06/30,385.62 = 7,105.11/x
  3. Step 3: Cross multiply
    20,255.06x = 30,385.62 × 7,105.11
  4. Step 4: Simplify right side
    20,255.06x = 215,893,154.76
  5. Step 5: Solve for x
    x = 215,893,154.76/20,255.06
  6. Step 6: Final answer
    x = 10,658.73

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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.