Home / 20,126.67-30,194.86-6,978.75

Finding the Fourth Proportional to 20,126.67, 30,194.86 and 6,978.75

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Solution

The fourth proportional to 20,126.67, 30,194.86 and 6,978.75 is: 10,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.67 : 30,194.86 = 6,978.75 : x
  2. Step 2: Convert to fraction form
    20,126.67/30,194.86 = 6,978.75/x
  3. Step 3: Cross multiply
    20,126.67x = 30,194.86 × 6,978.75
  4. Step 4: Simplify right side
    20,126.67x = 210,722,379.23
  5. Step 5: Solve for x
    x = 210,722,379.23/20,126.67
  6. Step 6: Final answer
    x = 10,469.81

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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.