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Finding the Fourth Proportional to 12,398.26, 17,109.72 and 6,809.26

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Solution

The fourth proportional to 12,398.26, 17,109.72 and 6,809.26 is: 9,396.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.26 : 17,109.72 = 6,809.26 : x
  2. Step 2: Convert to fraction form
    12,398.26/17,109.72 = 6,809.26/x
  3. Step 3: Cross multiply
    12,398.26x = 17,109.72 × 6,809.26
  4. Step 4: Simplify right side
    12,398.26x = 116,504,532.01
  5. Step 5: Solve for x
    x = 116,504,532.01/12,398.26
  6. Step 6: Final answer
    x = 9,396.85

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1.5x scale

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.