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Finding the Fourth Proportional to 13,195.89, 19,793.85 and 3,961.89

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Solution

The fourth proportional to 13,195.89, 19,793.85 and 3,961.89 is: 5,942.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.89 : 19,793.85 = 3,961.89 : x
  2. Step 2: Convert to fraction form
    13,195.89/19,793.85 = 3,961.89/x
  3. Step 3: Cross multiply
    13,195.89x = 19,793.85 × 3,961.89
  4. Step 4: Simplify right side
    13,195.89x = 78,421,056.38
  5. Step 5: Solve for x
    x = 78,421,056.38/13,195.89
  6. Step 6: Final answer
    x = 5,942.84

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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.