Home / 11,219.46-15,480.36-6,439.11

Finding the Fourth Proportional to 11,219.46, 15,480.36 and 6,439.11

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Solution

The fourth proportional to 11,219.46, 15,480.36 and 6,439.11 is: 8,884.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.46 : 15,480.36 = 6,439.11 : x
  2. Step 2: Convert to fraction form
    11,219.46/15,480.36 = 6,439.11/x
  3. Step 3: Cross multiply
    11,219.46x = 15,480.36 × 6,439.11
  4. Step 4: Simplify right side
    11,219.46x = 99,679,740.88
  5. Step 5: Solve for x
    x = 99,679,740.88/11,219.46
  6. Step 6: Final answer
    x = 8,884.54

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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.