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Finding the Fourth Proportional to 15,655.42, 21,604.67 and 8,581.69

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Solution

The fourth proportional to 15,655.42, 21,604.67 and 8,581.69 is: 11,842.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.42 : 21,604.67 = 8,581.69 : x
  2. Step 2: Convert to fraction form
    15,655.42/21,604.67 = 8,581.69/x
  3. Step 3: Cross multiply
    15,655.42x = 21,604.67 × 8,581.69
  4. Step 4: Simplify right side
    15,655.42x = 185,404,580.49
  5. Step 5: Solve for x
    x = 185,404,580.49/15,655.42
  6. Step 6: Final answer
    x = 11,842.84

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