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Finding the Fourth Proportional to 13.76, 18.99 and 7.62

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Solution

The fourth proportional to 13.76, 18.99 and 7.62 is: 10.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.76 : 18.99 = 7.62 : x
  2. Step 2: Convert to fraction form
    13.76/18.99 = 7.62/x
  3. Step 3: Cross multiply
    13.76x = 18.99 × 7.62
  4. Step 4: Simplify right side
    13.76x = 144.71
  5. Step 5: Solve for x
    x = 144.71/13.76
  6. Step 6: Final answer
    x = 10.52

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