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Finding the Fourth Proportional to 17,418.20, 26,119.74 and 6,321.20

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Solution

The fourth proportional to 17,418.20, 26,119.74 and 6,321.20 is: 9,479.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,418.20 : 26,119.74 = 6,321.20 : x
  2. Step 2: Convert to fraction form
    17,418.20/26,119.74 = 6,321.20/x
  3. Step 3: Cross multiply
    17,418.20x = 26,119.74 × 6,321.20
  4. Step 4: Simplify right side
    17,418.20x = 165,108,100.49
  5. Step 5: Solve for x
    x = 165,108,100.49/17,418.20
  6. Step 6: Final answer
    x = 9,479.06

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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.