Home / 20,169.29-30,255.38-5,378.13

Finding the Fourth Proportional to 20,169.29, 30,255.38 and 5,378.13

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Solution

The fourth proportional to 20,169.29, 30,255.38 and 5,378.13 is: 8,067.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.29 : 30,255.38 = 5,378.13 : x
  2. Step 2: Convert to fraction form
    20,169.29/30,255.38 = 5,378.13/x
  3. Step 3: Cross multiply
    20,169.29x = 30,255.38 × 5,378.13
  4. Step 4: Simplify right side
    20,169.29x = 162,717,366.84
  5. Step 5: Solve for x
    x = 162,717,366.84/20,169.29
  6. Step 6: Final answer
    x = 8,067.58

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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.