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Finding the Fourth Proportional to 11,371.51, 17,062.86 and 5,135.86

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Solution

The fourth proportional to 11,371.51, 17,062.86 and 5,135.86 is: 7,706.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,371.51 : 17,062.86 = 5,135.86 : x
  2. Step 2: Convert to fraction form
    11,371.51/17,062.86 = 5,135.86/x
  3. Step 3: Cross multiply
    11,371.51x = 17,062.86 × 5,135.86
  4. Step 4: Simplify right side
    11,371.51x = 87,632,374.85
  5. Step 5: Solve for x
    x = 87,632,374.85/11,371.51
  6. Step 6: Final answer
    x = 7,706.31

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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.