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Finding the Fourth Proportional to 17,979.74, 26,948.42 and 8,107.46

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Solution

The fourth proportional to 17,979.74, 26,948.42 and 8,107.46 is: 12,151.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,979.74 : 26,948.42 = 8,107.46 : x
  2. Step 2: Convert to fraction form
    17,979.74/26,948.42 = 8,107.46/x
  3. Step 3: Cross multiply
    17,979.74x = 26,948.42 × 8,107.46
  4. Step 4: Simplify right side
    17,979.74x = 218,483,237.21
  5. Step 5: Solve for x
    x = 218,483,237.21/17,979.74
  6. Step 6: Final answer
    x = 12,151.63

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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.