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Finding the Fourth Proportional to 25,990.52, 38,994.84 and 8,223.92

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Solution

The fourth proportional to 25,990.52, 38,994.84 and 8,223.92 is: 12,338.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.52 : 38,994.84 = 8,223.92 : x
  2. Step 2: Convert to fraction form
    25,990.52/38,994.84 = 8,223.92/x
  3. Step 3: Cross multiply
    25,990.52x = 38,994.84 × 8,223.92
  4. Step 4: Simplify right side
    25,990.52x = 320,690,444.57
  5. Step 5: Solve for x
    x = 320,690,444.57/25,990.52
  6. Step 6: Final answer
    x = 12,338.75

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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.