Home / 13,939.38-20,881.82-9,245.43

Finding the Fourth Proportional to 13,939.38, 20,881.82 and 9,245.43

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Solution

The fourth proportional to 13,939.38, 20,881.82 and 9,245.43 is: 13,850.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.38 : 20,881.82 = 9,245.43 : x
  2. Step 2: Convert to fraction form
    13,939.38/20,881.82 = 9,245.43/x
  3. Step 3: Cross multiply
    13,939.38x = 20,881.82 × 9,245.43
  4. Step 4: Simplify right side
    13,939.38x = 193,061,428.20
  5. Step 5: Solve for x
    x = 193,061,428.20/13,939.38
  6. Step 6: Final answer
    x = 13,850.07

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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.