Home / 12,107.62-18,161.57-3,787.30

Finding the Fourth Proportional to 12,107.62, 18,161.57 and 3,787.30

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Solution

The fourth proportional to 12,107.62, 18,161.57 and 3,787.30 is: 5,680.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.62 : 18,161.57 = 3,787.30 : x
  2. Step 2: Convert to fraction form
    12,107.62/18,161.57 = 3,787.30/x
  3. Step 3: Cross multiply
    12,107.62x = 18,161.57 × 3,787.30
  4. Step 4: Simplify right side
    12,107.62x = 68,783,314.06
  5. Step 5: Solve for x
    x = 68,783,314.06/12,107.62
  6. Step 6: Final answer
    x = 5,680.99

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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.