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Finding the Fourth Proportional to 9,338.67, 13,939.65 and 8,231.54

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Solution

The fourth proportional to 9,338.67, 13,939.65 and 8,231.54 is: 12,287.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,338.67 : 13,939.65 = 8,231.54 : x
  2. Step 2: Convert to fraction form
    9,338.67/13,939.65 = 8,231.54/x
  3. Step 3: Cross multiply
    9,338.67x = 13,939.65 × 8,231.54
  4. Step 4: Simplify right side
    9,338.67x = 114,744,716.86
  5. Step 5: Solve for x
    x = 114,744,716.86/9,338.67
  6. Step 6: Final answer
    x = 12,287.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.