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Finding the Fourth Proportional to 12,481.91, 17,225.12 and 6,816.59

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Solution

The fourth proportional to 12,481.91, 17,225.12 and 6,816.59 is: 9,406.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.91 : 17,225.12 = 6,816.59 : x
  2. Step 2: Convert to fraction form
    12,481.91/17,225.12 = 6,816.59/x
  3. Step 3: Cross multiply
    12,481.91x = 17,225.12 × 6,816.59
  4. Step 4: Simplify right side
    12,481.91x = 117,416,589.72
  5. Step 5: Solve for x
    x = 117,416,589.72/12,481.91
  6. Step 6: Final answer
    x = 9,406.94

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Half scale
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Double scale
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Similar ratio
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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.