Home / 18,189.20-27,278.30-11,948.96

Finding the Fourth Proportional to 18,189.20, 27,278.30 and 11,948.96

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Solution

The fourth proportional to 18,189.20, 27,278.30 and 11,948.96 is: 17,919.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.20 : 27,278.30 = 11,948.96 : x
  2. Step 2: Convert to fraction form
    18,189.20/27,278.30 = 11,948.96/x
  3. Step 3: Cross multiply
    18,189.20x = 27,278.30 × 11,948.96
  4. Step 4: Simplify right side
    18,189.20x = 325,947,315.57
  5. Step 5: Solve for x
    x = 325,947,315.57/18,189.20
  6. Step 6: Final answer
    x = 17,919.83

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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.