Home / 18,105.05-27,187.68-12,219.80

Finding the Fourth Proportional to 18,105.05, 27,187.68 and 12,219.80

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Solution

The fourth proportional to 18,105.05, 27,187.68 and 12,219.80 is: 18,350.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.05 : 27,187.68 = 12,219.80 : x
  2. Step 2: Convert to fraction form
    18,105.05/27,187.68 = 12,219.80/x
  3. Step 3: Cross multiply
    18,105.05x = 27,187.68 × 12,219.80
  4. Step 4: Simplify right side
    18,105.05x = 332,227,921.95
  5. Step 5: Solve for x
    x = 332,227,921.95/18,105.05
  6. Step 6: Final answer
    x = 18,350.01

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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.