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Finding the Fourth Proportional to 17,313.12, 25,979.68 and 7,317.12

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Solution

The fourth proportional to 17,313.12, 25,979.68 and 7,317.12 is: 10,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,313.12 : 25,979.68 = 7,317.12 : x
  2. Step 2: Convert to fraction form
    17,313.12/25,979.68 = 7,317.12/x
  3. Step 3: Cross multiply
    17,313.12x = 25,979.68 × 7,317.12
  4. Step 4: Simplify right side
    17,313.12x = 190,096,436.12
  5. Step 5: Solve for x
    x = 190,096,436.12/17,313.12
  6. Step 6: Final answer
    x = 10,979.91

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.