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Finding the Fourth Proportional to 22,455, 30,987.90 and 12,519

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Solution

The fourth proportional to 22,455, 30,987.90 and 12,519 is: 17,276.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,455 : 30,987.90 = 12,519 : x
  2. Step 2: Convert to fraction form
    22,455/30,987.90 = 12,519/x
  3. Step 3: Cross multiply
    22,455x = 30,987.90 × 12,519
  4. Step 4: Simplify right side
    22,455x = 387,937,520.10
  5. Step 5: Solve for x
    x = 387,937,520.10/22,455
  6. Step 6: Final answer
    x = 17,276.22

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