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Finding the Fourth Proportional to 31,859.76, 43,953.84 and 18,428.52

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Solution

The fourth proportional to 31,859.76, 43,953.84 and 18,428.52 is: 25,424.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,859.76 : 43,953.84 = 18,428.52 : x
  2. Step 2: Convert to fraction form
    31,859.76/43,953.84 = 18,428.52/x
  3. Step 3: Cross multiply
    31,859.76x = 43,953.84 × 18,428.52
  4. Step 4: Simplify right side
    31,859.76x = 810,004,219.52
  5. Step 5: Solve for x
    x = 810,004,219.52/31,859.76
  6. Step 6: Final answer
    x = 25,424.05

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