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Finding the Fourth Proportional to 10,643.80, 15,959.80 and 4,938.55

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Solution

The fourth proportional to 10,643.80, 15,959.80 and 4,938.55 is: 7,405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,643.80 : 15,959.80 = 4,938.55 : x
  2. Step 2: Convert to fraction form
    10,643.80/15,959.80 = 4,938.55/x
  3. Step 3: Cross multiply
    10,643.80x = 15,959.80 × 4,938.55
  4. Step 4: Simplify right side
    10,643.80x = 78,818,270.29
  5. Step 5: Solve for x
    x = 78,818,270.29/10,643.80
  6. Step 6: Final answer
    x = 7,405.09

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