Home / 13,771.50-20,654.16-3,910.56

Finding the Fourth Proportional to 13,771.50, 20,654.16 and 3,910.56

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Solution

The fourth proportional to 13,771.50, 20,654.16 and 3,910.56 is: 5,864.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.50 : 20,654.16 = 3,910.56 : x
  2. Step 2: Convert to fraction form
    13,771.50/20,654.16 = 3,910.56/x
  3. Step 3: Cross multiply
    13,771.50x = 20,654.16 × 3,910.56
  4. Step 4: Simplify right side
    13,771.50x = 80,769,331.93
  5. Step 5: Solve for x
    x = 80,769,331.93/13,771.50
  6. Step 6: Final answer
    x = 5,864.96

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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.