Home / 20,122.21-30,223.56-12,132.97

Finding the Fourth Proportional to 20,122.21, 30,223.56 and 12,132.97

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Solution

The fourth proportional to 20,122.21, 30,223.56 and 12,132.97 is: 18,223.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.21 : 30,223.56 = 12,132.97 : x
  2. Step 2: Convert to fraction form
    20,122.21/30,223.56 = 12,132.97/x
  3. Step 3: Cross multiply
    20,122.21x = 30,223.56 × 12,132.97
  4. Step 4: Simplify right side
    20,122.21x = 366,701,546.77
  5. Step 5: Solve for x
    x = 366,701,546.77/20,122.21
  6. Step 6: Final answer
    x = 18,223.72

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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.