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Finding the Fourth Proportional to 25,899.94, 38,849.92 and 8,131.94

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Solution

The fourth proportional to 25,899.94, 38,849.92 and 8,131.94 is: 12,197.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,899.94 : 38,849.92 = 8,131.94 : x
  2. Step 2: Convert to fraction form
    25,899.94/38,849.92 = 8,131.94/x
  3. Step 3: Cross multiply
    25,899.94x = 38,849.92 × 8,131.94
  4. Step 4: Simplify right side
    25,899.94x = 315,925,063.16
  5. Step 5: Solve for x
    x = 315,925,063.16/25,899.94
  6. Step 6: Final answer
    x = 12,197.91

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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.