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Finding the Fourth Proportional to 12,493.66, 18,743.51 and 3,729.28

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Solution

The fourth proportional to 12,493.66, 18,743.51 and 3,729.28 is: 5,594.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,493.66 : 18,743.51 = 3,729.28 : x
  2. Step 2: Convert to fraction form
    12,493.66/18,743.51 = 3,729.28/x
  3. Step 3: Cross multiply
    12,493.66x = 18,743.51 × 3,729.28
  4. Step 4: Simplify right side
    12,493.66x = 69,899,778.33
  5. Step 5: Solve for x
    x = 69,899,778.33/12,493.66
  6. Step 6: Final answer
    x = 5,594.82

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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.