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Finding the Fourth Proportional to 25,469.91, 38,204.87 and 7,939.71

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Solution

The fourth proportional to 25,469.91, 38,204.87 and 7,939.71 is: 11,909.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,469.91 : 38,204.87 = 7,939.71 : x
  2. Step 2: Convert to fraction form
    25,469.91/38,204.87 = 7,939.71/x
  3. Step 3: Cross multiply
    25,469.91x = 38,204.87 × 7,939.71
  4. Step 4: Simplify right side
    25,469.91x = 303,335,548.69
  5. Step 5: Solve for x
    x = 303,335,548.69/25,469.91
  6. Step 6: Final answer
    x = 11,909.57

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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.