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Finding the Fourth Proportional to 20,065.56, 30,102.12 and 8,972.72

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Solution

The fourth proportional to 20,065.56, 30,102.12 and 8,972.72 is: 13,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.56 : 30,102.12 = 8,972.72 : x
  2. Step 2: Convert to fraction form
    20,065.56/30,102.12 = 8,972.72/x
  3. Step 3: Cross multiply
    20,065.56x = 30,102.12 × 8,972.72
  4. Step 4: Simplify right side
    20,065.56x = 270,097,894.17
  5. Step 5: Solve for x
    x = 270,097,894.17/20,065.56
  6. Step 6: Final answer
    x = 13,460.77

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