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Finding the Fourth Proportional to 28,376.22, 39,158.81 and 15,629.16

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Solution

The fourth proportional to 28,376.22, 39,158.81 and 15,629.16 is: 21,568.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.22 : 39,158.81 = 15,629.16 : x
  2. Step 2: Convert to fraction form
    28,376.22/39,158.81 = 15,629.16/x
  3. Step 3: Cross multiply
    28,376.22x = 39,158.81 × 15,629.16
  4. Step 4: Simplify right side
    28,376.22x = 612,019,306.90
  5. Step 5: Solve for x
    x = 612,019,306.90/28,376.22
  6. Step 6: Final answer
    x = 21,568.04

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