Home / 12,179.62-18,270.38-3,860.11

Finding the Fourth Proportional to 12,179.62, 18,270.38 and 3,860.11

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Solution

The fourth proportional to 12,179.62, 18,270.38 and 3,860.11 is: 5,790.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.62 : 18,270.38 = 3,860.11 : x
  2. Step 2: Convert to fraction form
    12,179.62/18,270.38 = 3,860.11/x
  3. Step 3: Cross multiply
    12,179.62x = 18,270.38 × 3,860.11
  4. Step 4: Simplify right side
    12,179.62x = 70,525,676.54
  5. Step 5: Solve for x
    x = 70,525,676.54/12,179.62
  6. Step 6: Final answer
    x = 5,790.47

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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.