Home / 11,219.96-15,481.04-6,439.62

Finding the Fourth Proportional to 11,219.96, 15,481.04 and 6,439.62

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Solution

The fourth proportional to 11,219.96, 15,481.04 and 6,439.62 is: 8,885.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.96 : 15,481.04 = 6,439.62 : x
  2. Step 2: Convert to fraction form
    11,219.96/15,481.04 = 6,439.62/x
  3. Step 3: Cross multiply
    11,219.96x = 15,481.04 × 6,439.62
  4. Step 4: Simplify right side
    11,219.96x = 99,692,014.80
  5. Step 5: Solve for x
    x = 99,692,014.80/11,219.96
  6. Step 6: Final answer
    x = 8,885.24

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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.