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Finding the Fourth Proportional to 11,814.56, 17,718 and 5,240.48

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Solution

The fourth proportional to 11,814.56, 17,718 and 5,240.48 is: 7,859.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,814.56 : 17,718 = 5,240.48 : x
  2. Step 2: Convert to fraction form
    11,814.56/17,718 = 5,240.48/x
  3. Step 3: Cross multiply
    11,814.56x = 17,718 × 5,240.48
  4. Step 4: Simplify right side
    11,814.56x = 92,850,824.64
  5. Step 5: Solve for x
    x = 92,850,824.64/11,814.56
  6. Step 6: Final answer
    x = 7,859.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.