Home / 20,504.94-30,747.78-12,186.06

Finding the Fourth Proportional to 20,504.94, 30,747.78 and 12,186.06

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Solution

The fourth proportional to 20,504.94, 30,747.78 and 12,186.06 is: 18,273.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.94 : 30,747.78 = 12,186.06 : x
  2. Step 2: Convert to fraction form
    20,504.94/30,747.78 = 12,186.06/x
  3. Step 3: Cross multiply
    20,504.94x = 30,747.78 × 12,186.06
  4. Step 4: Simplify right side
    20,504.94x = 374,694,291.95
  5. Step 5: Solve for x
    x = 374,694,291.95/20,504.94
  6. Step 6: Final answer
    x = 18,273.37

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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.