Home / 20,126.06-30,149.82-13,179.50

Finding the Fourth Proportional to 20,126.06, 30,149.82 and 13,179.50

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Solution

The fourth proportional to 20,126.06, 30,149.82 and 13,179.50 is: 19,743.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.06 : 30,149.82 = 13,179.50 : x
  2. Step 2: Convert to fraction form
    20,126.06/30,149.82 = 13,179.50/x
  3. Step 3: Cross multiply
    20,126.06x = 30,149.82 × 13,179.50
  4. Step 4: Simplify right side
    20,126.06x = 397,359,552.69
  5. Step 5: Solve for x
    x = 397,359,552.69/20,126.06
  6. Step 6: Final answer
    x = 19,743.53

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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.