Home / 20,125.69-30,149.26-13,179.13

Finding the Fourth Proportional to 20,125.69, 30,149.26 and 13,179.13

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Solution

The fourth proportional to 20,125.69, 30,149.26 and 13,179.13 is: 19,742.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.69 : 30,149.26 = 13,179.13 : x
  2. Step 2: Convert to fraction form
    20,125.69/30,149.26 = 13,179.13/x
  3. Step 3: Cross multiply
    20,125.69x = 30,149.26 × 13,179.13
  4. Step 4: Simplify right side
    20,125.69x = 397,340,800.30
  5. Step 5: Solve for x
    x = 397,340,800.30/20,125.69
  6. Step 6: Final answer
    x = 19,742.97

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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.