Home / 12,118.98-18,161.89-9,155.00

Finding the Fourth Proportional to 12,118.98, 18,161.89 and 9,155.00

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Solution

The fourth proportional to 12,118.98, 18,161.89 and 9,155.00 is: 13,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.98 : 18,161.89 = 9,155.00 : x
  2. Step 2: Convert to fraction form
    12,118.98/18,161.89 = 9,155.00/x
  3. Step 3: Cross multiply
    12,118.98x = 18,161.89 × 9,155.00
  4. Step 4: Simplify right side
    12,118.98x = 166,272,083.13
  5. Step 5: Solve for x
    x = 166,272,083.13/12,118.98
  6. Step 6: Final answer
    x = 13,719.97

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