Home / 18,481.85-27,722.78-5,154.30

Finding the Fourth Proportional to 18,481.85, 27,722.78 and 5,154.30

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Solution

The fourth proportional to 18,481.85, 27,722.78 and 5,154.30 is: 7,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.85 : 27,722.78 = 5,154.30 : x
  2. Step 2: Convert to fraction form
    18,481.85/27,722.78 = 5,154.30/x
  3. Step 3: Cross multiply
    18,481.85x = 27,722.78 × 5,154.30
  4. Step 4: Simplify right side
    18,481.85x = 142,891,524.95
  5. Step 5: Solve for x
    x = 142,891,524.95/18,481.85
  6. Step 6: Final answer
    x = 7,731.45

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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.