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Finding the Fourth Proportional to 25,938.83, 38,909.16 and 8,408.81

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Solution

The fourth proportional to 25,938.83, 38,909.16 and 8,408.81 is: 12,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,938.83 : 38,909.16 = 8,408.81 : x
  2. Step 2: Convert to fraction form
    25,938.83/38,909.16 = 8,408.81/x
  3. Step 3: Cross multiply
    25,938.83x = 38,909.16 × 8,408.81
  4. Step 4: Simplify right side
    25,938.83x = 327,179,830.97
  5. Step 5: Solve for x
    x = 327,179,830.97/25,938.83
  6. Step 6: Final answer
    x = 12,613.51

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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.