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Finding the Fourth Proportional to 13,931.87, 20,900.89 and 7,356.52

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Solution

The fourth proportional to 13,931.87, 20,900.89 and 7,356.52 is: 11,036.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.87 : 20,900.89 = 7,356.52 : x
  2. Step 2: Convert to fraction form
    13,931.87/20,900.89 = 7,356.52/x
  3. Step 3: Cross multiply
    13,931.87x = 20,900.89 × 7,356.52
  4. Step 4: Simplify right side
    13,931.87x = 153,757,809.24
  5. Step 5: Solve for x
    x = 153,757,809.24/13,931.87
  6. Step 6: Final answer
    x = 11,036.41

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