Home / 18,791.04-28,180.94-11,781.71

Finding the Fourth Proportional to 18,791.04, 28,180.94 and 11,781.71

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Solution

The fourth proportional to 18,791.04, 28,180.94 and 11,781.71 is: 17,669.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.04 : 28,180.94 = 11,781.71 : x
  2. Step 2: Convert to fraction form
    18,791.04/28,180.94 = 11,781.71/x
  3. Step 3: Cross multiply
    18,791.04x = 28,180.94 × 11,781.71
  4. Step 4: Simplify right side
    18,791.04x = 332,019,462.79
  5. Step 5: Solve for x
    x = 332,019,462.79/18,791.04
  6. Step 6: Final answer
    x = 17,669.03

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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.