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Finding the Fourth Proportional to 21,274.25, 31,855.64 and 15,000.30

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Solution

The fourth proportional to 21,274.25, 31,855.64 and 15,000.30 is: 22,461.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.25 : 31,855.64 = 15,000.30 : x
  2. Step 2: Convert to fraction form
    21,274.25/31,855.64 = 15,000.30/x
  3. Step 3: Cross multiply
    21,274.25x = 31,855.64 × 15,000.30
  4. Step 4: Simplify right side
    21,274.25x = 477,844,156.69
  5. Step 5: Solve for x
    x = 477,844,156.69/21,274.25
  6. Step 6: Final answer
    x = 22,461.15

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