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Finding the Fourth Proportional to 25,787.12, 38,674.38 and 8,253.32

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Solution

The fourth proportional to 25,787.12, 38,674.38 and 8,253.32 is: 12,377.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.12 : 38,674.38 = 8,253.32 : x
  2. Step 2: Convert to fraction form
    25,787.12/38,674.38 = 8,253.32/x
  3. Step 3: Cross multiply
    25,787.12x = 38,674.38 × 8,253.32
  4. Step 4: Simplify right side
    25,787.12x = 319,192,033.94
  5. Step 5: Solve for x
    x = 319,192,033.94/25,787.12
  6. Step 6: Final answer
    x = 12,377.96

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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.