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Finding the Fourth Proportional to 12,568.96, 17,344.86 and 6,979.96

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Solution

The fourth proportional to 12,568.96, 17,344.86 and 6,979.96 is: 9,632.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,568.96 : 17,344.86 = 6,979.96 : x
  2. Step 2: Convert to fraction form
    12,568.96/17,344.86 = 6,979.96/x
  3. Step 3: Cross multiply
    12,568.96x = 17,344.86 × 6,979.96
  4. Step 4: Simplify right side
    12,568.96x = 121,066,429.01
  5. Step 5: Solve for x
    x = 121,066,429.01/12,568.96
  6. Step 6: Final answer
    x = 9,632.18

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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.