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Finding the Fourth Proportional to 21,911.50, 30,237.87 and 11,975.50

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Solution

The fourth proportional to 21,911.50, 30,237.87 and 11,975.50 is: 16,526.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.50 : 30,237.87 = 11,975.50 : x
  2. Step 2: Convert to fraction form
    21,911.50/30,237.87 = 11,975.50/x
  3. Step 3: Cross multiply
    21,911.50x = 30,237.87 × 11,975.50
  4. Step 4: Simplify right side
    21,911.50x = 362,113,612.19
  5. Step 5: Solve for x
    x = 362,113,612.19/21,911.50
  6. Step 6: Final answer
    x = 16,526.19

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