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Finding the Fourth Proportional to 20,648.56, 28,499.16 and 12,263.44

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Solution

The fourth proportional to 20,648.56, 28,499.16 and 12,263.44 is: 16,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.56 : 28,499.16 = 12,263.44 : x
  2. Step 2: Convert to fraction form
    20,648.56/28,499.16 = 12,263.44/x
  3. Step 3: Cross multiply
    20,648.56x = 28,499.16 × 12,263.44
  4. Step 4: Simplify right side
    20,648.56x = 349,497,738.71
  5. Step 5: Solve for x
    x = 349,497,738.71/20,648.56
  6. Step 6: Final answer
    x = 16,926.01

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