Home / 36,409.28-54,621.72-20,621.78

Finding the Fourth Proportional to 36,409.28, 54,621.72 and 20,621.78

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Solution

The fourth proportional to 36,409.28, 54,621.72 and 20,621.78 is: 30,937.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,409.28 : 54,621.72 = 20,621.78 : x
  2. Step 2: Convert to fraction form
    36,409.28/54,621.72 = 20,621.78/x
  3. Step 3: Cross multiply
    36,409.28x = 54,621.72 × 20,621.78
  4. Step 4: Simplify right side
    36,409.28x = 1,126,396,819.95
  5. Step 5: Solve for x
    x = 1,126,396,819.95/36,409.28
  6. Step 6: Final answer
    x = 30,937.08

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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.