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Finding the Fourth Proportional to 15,642.99, 21,597.30 and 13,961.43

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Solution

The fourth proportional to 15,642.99, 21,597.30 and 13,961.43 is: 19,275.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,642.99 : 21,597.30 = 13,961.43 : x
  2. Step 2: Convert to fraction form
    15,642.99/21,597.30 = 13,961.43/x
  3. Step 3: Cross multiply
    15,642.99x = 21,597.30 × 13,961.43
  4. Step 4: Simplify right side
    15,642.99x = 301,529,192.14
  5. Step 5: Solve for x
    x = 301,529,192.14/15,642.99
  6. Step 6: Final answer
    x = 19,275.68

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