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Finding the Fourth Proportional to 17,758, 26,619 and 7,901.68

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Solution

The fourth proportional to 17,758, 26,619 and 7,901.68 is: 11,844.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,758 : 26,619 = 7,901.68 : x
  2. Step 2: Convert to fraction form
    17,758/26,619 = 7,901.68/x
  3. Step 3: Cross multiply
    17,758x = 26,619 × 7,901.68
  4. Step 4: Simplify right side
    17,758x = 210,334,819.92
  5. Step 5: Solve for x
    x = 210,334,819.92/17,758
  6. Step 6: Final answer
    x = 11,844.51

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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.