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Finding the Fourth Proportional to 12,481.66, 17,220.54 and 8,234.83

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Solution

The fourth proportional to 12,481.66, 17,220.54 and 8,234.83 is: 11,361.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.66 : 17,220.54 = 8,234.83 : x
  2. Step 2: Convert to fraction form
    12,481.66/17,220.54 = 8,234.83/x
  3. Step 3: Cross multiply
    12,481.66x = 17,220.54 × 8,234.83
  4. Step 4: Simplify right side
    12,481.66x = 141,808,219.41
  5. Step 5: Solve for x
    x = 141,808,219.41/12,481.66
  6. Step 6: Final answer
    x = 11,361.33

Related Problems

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Half scale
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Double scale
Find fourth proportional to 12,482.66, 17,221.92 and 8,235.83
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.