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Finding the Fourth Proportional to 19,878.62, 27,431.97 and 10,926.19

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Solution

The fourth proportional to 19,878.62, 27,431.97 and 10,926.19 is: 15,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.62 : 27,431.97 = 10,926.19 : x
  2. Step 2: Convert to fraction form
    19,878.62/27,431.97 = 10,926.19/x
  3. Step 3: Cross multiply
    19,878.62x = 27,431.97 × 10,926.19
  4. Step 4: Simplify right side
    19,878.62x = 299,726,909.61
  5. Step 5: Solve for x
    x = 299,726,909.61/19,878.62
  6. Step 6: Final answer
    x = 15,077.86

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