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Finding the Fourth Proportional to 12,009.86, 18,015.05 and 3,125.54

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Solution

The fourth proportional to 12,009.86, 18,015.05 and 3,125.54 is: 4,688.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.86 : 18,015.05 = 3,125.54 : x
  2. Step 2: Convert to fraction form
    12,009.86/18,015.05 = 3,125.54/x
  3. Step 3: Cross multiply
    12,009.86x = 18,015.05 × 3,125.54
  4. Step 4: Simplify right side
    12,009.86x = 56,306,653.67
  5. Step 5: Solve for x
    x = 56,306,653.67/12,009.86
  6. Step 6: Final answer
    x = 4,688.37

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