Home / 11,188.08-15,440.76-6,997.68

Finding the Fourth Proportional to 11,188.08, 15,440.76 and 6,997.68

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Solution

The fourth proportional to 11,188.08, 15,440.76 and 6,997.68 is: 9,657.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.08 : 15,440.76 = 6,997.68 : x
  2. Step 2: Convert to fraction form
    11,188.08/15,440.76 = 6,997.68/x
  3. Step 3: Cross multiply
    11,188.08x = 15,440.76 × 6,997.68
  4. Step 4: Simplify right side
    11,188.08x = 108,049,497.44
  5. Step 5: Solve for x
    x = 108,049,497.44/11,188.08
  6. Step 6: Final answer
    x = 9,657.55

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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.