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Finding the Fourth Proportional to 11,321.93, 16,982.89 and 7,425.43

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Solution

The fourth proportional to 11,321.93, 16,982.89 and 7,425.43 is: 11,138.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.93 : 16,982.89 = 7,425.43 : x
  2. Step 2: Convert to fraction form
    11,321.93/16,982.89 = 7,425.43/x
  3. Step 3: Cross multiply
    11,321.93x = 16,982.89 × 7,425.43
  4. Step 4: Simplify right side
    11,321.93x = 126,105,199.87
  5. Step 5: Solve for x
    x = 126,105,199.87/11,321.93
  6. Step 6: Final answer
    x = 11,138.13

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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.