Home / 12,106.88-18,160.32-3,786.72

Finding the Fourth Proportional to 12,106.88, 18,160.32 and 3,786.72

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Solution

The fourth proportional to 12,106.88, 18,160.32 and 3,786.72 is: 5,680.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.88 : 18,160.32 = 3,786.72 : x
  2. Step 2: Convert to fraction form
    12,106.88/18,160.32 = 3,786.72/x
  3. Step 3: Cross multiply
    12,106.88x = 18,160.32 × 3,786.72
  4. Step 4: Simplify right side
    12,106.88x = 68,768,046.95
  5. Step 5: Solve for x
    x = 68,768,046.95/12,106.88
  6. Step 6: Final answer
    x = 5,680.08

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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.