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Finding the Fourth Proportional to 17,376.12, 23,979.04 and 9,418.28

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Solution

The fourth proportional to 17,376.12, 23,979.04 and 9,418.28 is: 12,997.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,376.12 : 23,979.04 = 9,418.28 : x
  2. Step 2: Convert to fraction form
    17,376.12/23,979.04 = 9,418.28/x
  3. Step 3: Cross multiply
    17,376.12x = 23,979.04 × 9,418.28
  4. Step 4: Simplify right side
    17,376.12x = 225,841,169.41
  5. Step 5: Solve for x
    x = 225,841,169.41/17,376.12
  6. Step 6: Final answer
    x = 12,997.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.