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Finding the Fourth Proportional to 13,976.48, 20,957.16 and 6,941.06

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Solution

The fourth proportional to 13,976.48, 20,957.16 and 6,941.06 is: 10,407.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,976.48 : 20,957.16 = 6,941.06 : x
  2. Step 2: Convert to fraction form
    13,976.48/20,957.16 = 6,941.06/x
  3. Step 3: Cross multiply
    13,976.48x = 20,957.16 × 6,941.06
  4. Step 4: Simplify right side
    13,976.48x = 145,464,904.99
  5. Step 5: Solve for x
    x = 145,464,904.99/13,976.48
  6. Step 6: Final answer
    x = 10,407.84

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