Home / 12,187.56-18,284.09-3,867.85

Finding the Fourth Proportional to 12,187.56, 18,284.09 and 3,867.85

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Solution

The fourth proportional to 12,187.56, 18,284.09 and 3,867.85 is: 5,802.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.56 : 18,284.09 = 3,867.85 : x
  2. Step 2: Convert to fraction form
    12,187.56/18,284.09 = 3,867.85/x
  3. Step 3: Cross multiply
    12,187.56x = 18,284.09 × 3,867.85
  4. Step 4: Simplify right side
    12,187.56x = 70,720,121.02
  5. Step 5: Solve for x
    x = 70,720,121.02/12,187.56
  6. Step 6: Final answer
    x = 5,802.65

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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.