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Finding the Fourth Proportional to 13,695.96, 20,553.84 and 4,931.76

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Solution

The fourth proportional to 13,695.96, 20,553.84 and 4,931.76 is: 7,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.96 : 20,553.84 = 4,931.76 : x
  2. Step 2: Convert to fraction form
    13,695.96/20,553.84 = 4,931.76/x
  3. Step 3: Cross multiply
    13,695.96x = 20,553.84 × 4,931.76
  4. Step 4: Simplify right side
    13,695.96x = 101,366,605.96
  5. Step 5: Solve for x
    x = 101,366,605.96/13,695.96
  6. Step 6: Final answer
    x = 7,401.20

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