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Finding the Fourth Proportional to 31,089.59, 42,902.39 and 16,942.13

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Solution

The fourth proportional to 31,089.59, 42,902.39 and 16,942.13 is: 23,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,089.59 : 42,902.39 = 16,942.13 : x
  2. Step 2: Convert to fraction form
    31,089.59/42,902.39 = 16,942.13/x
  3. Step 3: Cross multiply
    31,089.59x = 42,902.39 × 16,942.13
  4. Step 4: Simplify right side
    31,089.59x = 726,857,783.98
  5. Step 5: Solve for x
    x = 726,857,783.98/31,089.59
  6. Step 6: Final answer
    x = 23,379.46

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