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Finding the Fourth Proportional to 25,999.91, 39,006.78 and 8,230.91

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Solution

The fourth proportional to 25,999.91, 39,006.78 and 8,230.91 is: 12,348.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,999.91 : 39,006.78 = 8,230.91 : x
  2. Step 2: Convert to fraction form
    25,999.91/39,006.78 = 8,230.91/x
  3. Step 3: Cross multiply
    25,999.91x = 39,006.78 × 8,230.91
  4. Step 4: Simplify right side
    25,999.91x = 321,061,295.57
  5. Step 5: Solve for x
    x = 321,061,295.57/25,999.91
  6. Step 6: Final answer
    x = 12,348.55

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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.