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Finding the Fourth Proportional to 20,102.67, 30,104.78 and 14,164.97

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Solution

The fourth proportional to 20,102.67, 30,104.78 and 14,164.97 is: 21,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.67 : 30,104.78 = 14,164.97 : x
  2. Step 2: Convert to fraction form
    20,102.67/30,104.78 = 14,164.97/x
  3. Step 3: Cross multiply
    20,102.67x = 30,104.78 × 14,164.97
  4. Step 4: Simplify right side
    20,102.67x = 426,433,119.62
  5. Step 5: Solve for x
    x = 426,433,119.62/20,102.67
  6. Step 6: Final answer
    x = 21,212.76

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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.