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Finding the Fourth Proportional to 25,939.73, 38,915.07 and 8,408.19

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Solution

The fourth proportional to 25,939.73, 38,915.07 and 8,408.19 is: 12,614.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,939.73 : 38,915.07 = 8,408.19 : x
  2. Step 2: Convert to fraction form
    25,939.73/38,915.07 = 8,408.19/x
  3. Step 3: Cross multiply
    25,939.73x = 38,915.07 × 8,408.19
  4. Step 4: Simplify right side
    25,939.73x = 327,205,416.82
  5. Step 5: Solve for x
    x = 327,205,416.82/25,939.73
  6. Step 6: Final answer
    x = 12,614.06

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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.