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Finding the Fourth Proportional to 35,811.56, 53,715.72 and 12,439.82

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Solution

The fourth proportional to 35,811.56, 53,715.72 and 12,439.82 is: 18,659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,811.56 : 53,715.72 = 12,439.82 : x
  2. Step 2: Convert to fraction form
    35,811.56/53,715.72 = 12,439.82/x
  3. Step 3: Cross multiply
    35,811.56x = 53,715.72 × 12,439.82
  4. Step 4: Simplify right side
    35,811.56x = 668,213,887.97
  5. Step 5: Solve for x
    x = 668,213,887.97/35,811.56
  6. Step 6: Final answer
    x = 18,659.17

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