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Finding the Fourth Proportional to 17,751, 26,631 and 6,657.72

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Solution

The fourth proportional to 17,751, 26,631 and 6,657.72 is: 9,988.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,751 : 26,631 = 6,657.72 : x
  2. Step 2: Convert to fraction form
    17,751/26,631 = 6,657.72/x
  3. Step 3: Cross multiply
    17,751x = 26,631 × 6,657.72
  4. Step 4: Simplify right side
    17,751x = 177,301,741.32
  5. Step 5: Solve for x
    x = 177,301,741.32/17,751
  6. Step 6: Final answer
    x = 9,988.27

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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.