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Finding the Fourth Proportional to 17,663.73, 26,500.86 and 7,128.33

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Solution

The fourth proportional to 17,663.73, 26,500.86 and 7,128.33 is: 10,694.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,663.73 : 26,500.86 = 7,128.33 : x
  2. Step 2: Convert to fraction form
    17,663.73/26,500.86 = 7,128.33/x
  3. Step 3: Cross multiply
    17,663.73x = 26,500.86 × 7,128.33
  4. Step 4: Simplify right side
    17,663.73x = 188,906,875.36
  5. Step 5: Solve for x
    x = 188,906,875.36/17,663.73
  6. Step 6: Final answer
    x = 10,694.62

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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.