Home / 12,108.79-18,160.91-3,787.56

Finding the Fourth Proportional to 12,108.79, 18,160.91 and 3,787.56

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Solution

The fourth proportional to 12,108.79, 18,160.91 and 3,787.56 is: 5,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.79 : 18,160.91 = 3,787.56 : x
  2. Step 2: Convert to fraction form
    12,108.79/18,160.91 = 3,787.56/x
  3. Step 3: Cross multiply
    12,108.79x = 18,160.91 × 3,787.56
  4. Step 4: Simplify right side
    12,108.79x = 68,785,531.55
  5. Step 5: Solve for x
    x = 68,785,531.55/12,108.79
  6. Step 6: Final answer
    x = 5,680.63

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