Home / 20,155.70-30,233.62-6,115.85

Finding the Fourth Proportional to 20,155.70, 30,233.62 and 6,115.85

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Solution

The fourth proportional to 20,155.70, 30,233.62 and 6,115.85 is: 9,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.70 : 30,233.62 = 6,115.85 : x
  2. Step 2: Convert to fraction form
    20,155.70/30,233.62 = 6,115.85/x
  3. Step 3: Cross multiply
    20,155.70x = 30,233.62 × 6,115.85
  4. Step 4: Simplify right side
    20,155.70x = 184,904,284.88
  5. Step 5: Solve for x
    x = 184,904,284.88/20,155.70
  6. Step 6: Final answer
    x = 9,173.80

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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.