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Finding the Fourth Proportional to 25,421, 35,080.98 and 15,485

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Solution

The fourth proportional to 25,421, 35,080.98 and 15,485 is: 21,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421 : 35,080.98 = 15,485 : x
  2. Step 2: Convert to fraction form
    25,421/35,080.98 = 15,485/x
  3. Step 3: Cross multiply
    25,421x = 35,080.98 × 15,485
  4. Step 4: Simplify right side
    25,421x = 543,228,975.30
  5. Step 5: Solve for x
    x = 543,228,975.30/25,421
  6. Step 6: Final answer
    x = 21,369.30

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