Home / 20,169.20-30,254.79-5,378.25

Finding the Fourth Proportional to 20,169.20, 30,254.79 and 5,378.25

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Solution

The fourth proportional to 20,169.20, 30,254.79 and 5,378.25 is: 8,067.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.20 : 30,254.79 = 5,378.25 : x
  2. Step 2: Convert to fraction form
    20,169.20/30,254.79 = 5,378.25/x
  3. Step 3: Cross multiply
    20,169.20x = 30,254.79 × 5,378.25
  4. Step 4: Simplify right side
    20,169.20x = 162,717,824.32
  5. Step 5: Solve for x
    x = 162,717,824.32/20,169.20
  6. Step 6: Final answer
    x = 8,067.64

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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.