Home / 12,112.25-18,168.50-3,791.93

Finding the Fourth Proportional to 12,112.25, 18,168.50 and 3,791.93

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Solution

The fourth proportional to 12,112.25, 18,168.50 and 3,791.93 is: 5,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.25 : 18,168.50 = 3,791.93 : x
  2. Step 2: Convert to fraction form
    12,112.25/18,168.50 = 3,791.93/x
  3. Step 3: Cross multiply
    12,112.25x = 18,168.50 × 3,791.93
  4. Step 4: Simplify right side
    12,112.25x = 68,893,598.84
  5. Step 5: Solve for x
    x = 68,893,598.84/12,112.25
  6. Step 6: Final answer
    x = 5,687.93

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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.