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Finding the Fourth Proportional to 12,469, 17,207.46 and 6,879.88

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Solution

The fourth proportional to 12,469, 17,207.46 and 6,879.88 is: 9,494.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,469 : 17,207.46 = 6,879.88 : x
  2. Step 2: Convert to fraction form
    12,469/17,207.46 = 6,879.88/x
  3. Step 3: Cross multiply
    12,469x = 17,207.46 × 6,879.88
  4. Step 4: Simplify right side
    12,469x = 118,385,259.90
  5. Step 5: Solve for x
    x = 118,385,259.90/12,469
  6. Step 6: Final answer
    x = 9,494.37

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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.