Home / 15,816.75-21,825.23-8,742.21

Finding the Fourth Proportional to 15,816.75, 21,825.23 and 8,742.21

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Solution

The fourth proportional to 15,816.75, 21,825.23 and 8,742.21 is: 12,063.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.75 : 21,825.23 = 8,742.21 : x
  2. Step 2: Convert to fraction form
    15,816.75/21,825.23 = 8,742.21/x
  3. Step 3: Cross multiply
    15,816.75x = 21,825.23 × 8,742.21
  4. Step 4: Simplify right side
    15,816.75x = 190,800,700.25
  5. Step 5: Solve for x
    x = 190,800,700.25/15,816.75
  6. Step 6: Final answer
    x = 12,063.21

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