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Finding the Fourth Proportional to 12,203.76, 18,305.64 and 3,883.74

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Solution

The fourth proportional to 12,203.76, 18,305.64 and 3,883.74 is: 5,825.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,203.76 : 18,305.64 = 3,883.74 : x
  2. Step 2: Convert to fraction form
    12,203.76/18,305.64 = 3,883.74/x
  3. Step 3: Cross multiply
    12,203.76x = 18,305.64 × 3,883.74
  4. Step 4: Simplify right side
    12,203.76x = 71,094,346.29
  5. Step 5: Solve for x
    x = 71,094,346.29/12,203.76
  6. Step 6: Final answer
    x = 5,825.61

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.