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Finding the Fourth Proportional to 10,451.85, 15,678.29 and 4,211.03

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Solution

The fourth proportional to 10,451.85, 15,678.29 and 4,211.03 is: 6,316.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,451.85 : 15,678.29 = 4,211.03 : x
  2. Step 2: Convert to fraction form
    10,451.85/15,678.29 = 4,211.03/x
  3. Step 3: Cross multiply
    10,451.85x = 15,678.29 × 4,211.03
  4. Step 4: Simplify right side
    10,451.85x = 66,021,650.09
  5. Step 5: Solve for x
    x = 66,021,650.09/10,451.85
  6. Step 6: Final answer
    x = 6,316.74

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