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Finding the Fourth Proportional to 11,435.91, 17,142.24 and 7,738.51

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Solution

The fourth proportional to 11,435.91, 17,142.24 and 7,738.51 is: 11,599.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,435.91 : 17,142.24 = 7,738.51 : x
  2. Step 2: Convert to fraction form
    11,435.91/17,142.24 = 7,738.51/x
  3. Step 3: Cross multiply
    11,435.91x = 17,142.24 × 7,738.51
  4. Step 4: Simplify right side
    11,435.91x = 132,655,395.66
  5. Step 5: Solve for x
    x = 132,655,395.66/11,435.91
  6. Step 6: Final answer
    x = 11,599.90

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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.