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Finding the Fourth Proportional to 10,483.52, 15,728.00 and 3,909.75

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Solution

The fourth proportional to 10,483.52, 15,728.00 and 3,909.75 is: 5,865.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,483.52 : 15,728.00 = 3,909.75 : x
  2. Step 2: Convert to fraction form
    10,483.52/15,728.00 = 3,909.75/x
  3. Step 3: Cross multiply
    10,483.52x = 15,728.00 × 3,909.75
  4. Step 4: Simplify right side
    10,483.52x = 61,492,528.45
  5. Step 5: Solve for x
    x = 61,492,528.45/10,483.52
  6. Step 6: Final answer
    x = 5,865.64

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