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Finding the Fourth Proportional to 12,468.84, 17,207.28 and 6,879.84

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Solution

The fourth proportional to 12,468.84, 17,207.28 and 6,879.84 is: 9,494.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,468.84 : 17,207.28 = 6,879.84 : x
  2. Step 2: Convert to fraction form
    12,468.84/17,207.28 = 6,879.84/x
  3. Step 3: Cross multiply
    12,468.84x = 17,207.28 × 6,879.84
  4. Step 4: Simplify right side
    12,468.84x = 118,383,333.24
  5. Step 5: Solve for x
    x = 118,383,333.24/12,468.84
  6. Step 6: Final answer
    x = 9,494.33

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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.