Home / 12,186.82-18,280.75-3,866.66

Finding the Fourth Proportional to 12,186.82, 18,280.75 and 3,866.66

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Solution

The fourth proportional to 12,186.82, 18,280.75 and 3,866.66 is: 5,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.82 : 18,280.75 = 3,866.66 : x
  2. Step 2: Convert to fraction form
    12,186.82/18,280.75 = 3,866.66/x
  3. Step 3: Cross multiply
    12,186.82x = 18,280.75 × 3,866.66
  4. Step 4: Simplify right side
    12,186.82x = 70,685,343.72
  5. Step 5: Solve for x
    x = 70,685,343.72/12,186.82
  6. Step 6: Final answer
    x = 5,800.15

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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.