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Finding the Fourth Proportional to 19,957.20, 29,921.40 and 13,035.60

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Solution

The fourth proportional to 19,957.20, 29,921.40 and 13,035.60 is: 19,543.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957.20 : 29,921.40 = 13,035.60 : x
  2. Step 2: Convert to fraction form
    19,957.20/29,921.40 = 13,035.60/x
  3. Step 3: Cross multiply
    19,957.20x = 29,921.40 × 13,035.60
  4. Step 4: Simplify right side
    19,957.20x = 390,043,401.84
  5. Step 5: Solve for x
    x = 390,043,401.84/19,957.20
  6. Step 6: Final answer
    x = 19,543.99

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