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Finding the Fourth Proportional to 11,958.84, 17,940.99 and 3,640.04

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Solution

The fourth proportional to 11,958.84, 17,940.99 and 3,640.04 is: 5,460.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.84 : 17,940.99 = 3,640.04 : x
  2. Step 2: Convert to fraction form
    11,958.84/17,940.99 = 3,640.04/x
  3. Step 3: Cross multiply
    11,958.84x = 17,940.99 × 3,640.04
  4. Step 4: Simplify right side
    11,958.84x = 65,305,831.53
  5. Step 5: Solve for x
    x = 65,305,831.53/11,958.84
  6. Step 6: Final answer
    x = 5,460.88

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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.