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Finding the Fourth Proportional to 20,937.77, 28,895.73 and 11,988.08

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Solution

The fourth proportional to 20,937.77, 28,895.73 and 11,988.08 is: 16,544.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.77 : 28,895.73 = 11,988.08 : x
  2. Step 2: Convert to fraction form
    20,937.77/28,895.73 = 11,988.08/x
  3. Step 3: Cross multiply
    20,937.77x = 28,895.73 × 11,988.08
  4. Step 4: Simplify right side
    20,937.77x = 346,404,322.90
  5. Step 5: Solve for x
    x = 346,404,322.90/20,937.77
  6. Step 6: Final answer
    x = 16,544.47

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