Home / 12,101.94-18,155.43-3,781.62

Finding the Fourth Proportional to 12,101.94, 18,155.43 and 3,781.62

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Solution

The fourth proportional to 12,101.94, 18,155.43 and 3,781.62 is: 5,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.94 : 18,155.43 = 3,781.62 : x
  2. Step 2: Convert to fraction form
    12,101.94/18,155.43 = 3,781.62/x
  3. Step 3: Cross multiply
    12,101.94x = 18,155.43 × 3,781.62
  4. Step 4: Simplify right side
    12,101.94x = 68,656,937.20
  5. Step 5: Solve for x
    x = 68,656,937.20/12,101.94
  6. Step 6: Final answer
    x = 5,673.22

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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.