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Finding the Fourth Proportional to 13,978,396.09, 20,960,579.01 and 8,144,467.16

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Solution

The fourth proportional to 13,978,396.09, 20,960,579.01 and 8,144,467.16 is: 12,212,613.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,978,396.09 : 20,960,579.01 = 8,144,467.16 : x
  2. Step 2: Convert to fraction form
    13,978,396.09/20,960,579.01 = 8,144,467.16/x
  3. Step 3: Cross multiply
    13,978,396.09x = 20,960,579.01 × 8,144,467.16
  4. Step 4: Simplify right side
    13,978,396.09x = 170,712,747,401,530.31
  5. Step 5: Solve for x
    x = 170,712,747,401,530.31/13,978,396.09
  6. Step 6: Final answer
    x = 12,212,613.40

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