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Finding the Fourth Proportional to 20,369.97, 30,555.02 and 7,222.73

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Solution

The fourth proportional to 20,369.97, 30,555.02 and 7,222.73 is: 10,834.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.97 : 30,555.02 = 7,222.73 : x
  2. Step 2: Convert to fraction form
    20,369.97/30,555.02 = 7,222.73/x
  3. Step 3: Cross multiply
    20,369.97x = 30,555.02 × 7,222.73
  4. Step 4: Simplify right side
    20,369.97x = 220,690,524.89
  5. Step 5: Solve for x
    x = 220,690,524.89/20,369.97
  6. Step 6: Final answer
    x = 10,834.11

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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.