Home / 21,281.62-31,921.23-9,431.98

Finding the Fourth Proportional to 21,281.62, 31,921.23 and 9,431.98

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Solution

The fourth proportional to 21,281.62, 31,921.23 and 9,431.98 is: 14,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.62 : 31,921.23 = 9,431.98 : x
  2. Step 2: Convert to fraction form
    21,281.62/31,921.23 = 9,431.98/x
  3. Step 3: Cross multiply
    21,281.62x = 31,921.23 × 9,431.98
  4. Step 4: Simplify right side
    21,281.62x = 301,080,402.94
  5. Step 5: Solve for x
    x = 301,080,402.94/21,281.62
  6. Step 6: Final answer
    x = 14,147.44

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