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Finding the Fourth Proportional to 10,448.84, 15,669.66 and 3,428.48

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Solution

The fourth proportional to 10,448.84, 15,669.66 and 3,428.48 is: 5,141.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,448.84 : 15,669.66 = 3,428.48 : x
  2. Step 2: Convert to fraction form
    10,448.84/15,669.66 = 3,428.48/x
  3. Step 3: Cross multiply
    10,448.84x = 15,669.66 × 3,428.48
  4. Step 4: Simplify right side
    10,448.84x = 53,723,115.92
  5. Step 5: Solve for x
    x = 53,723,115.92/10,448.84
  6. Step 6: Final answer
    x = 5,141.54

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