Home / 20,105.98-30,155.00-6,777.66

Finding the Fourth Proportional to 20,105.98, 30,155.00 and 6,777.66

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Solution

The fourth proportional to 20,105.98, 30,155.00 and 6,777.66 is: 10,165.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.98 : 30,155.00 = 6,777.66 : x
  2. Step 2: Convert to fraction form
    20,105.98/30,155.00 = 6,777.66/x
  3. Step 3: Cross multiply
    20,105.98x = 30,155.00 × 6,777.66
  4. Step 4: Simplify right side
    20,105.98x = 204,380,241.16
  5. Step 5: Solve for x
    x = 204,380,241.16/20,105.98
  6. Step 6: Final answer
    x = 10,165.15

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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.