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Finding the Fourth Proportional to 13,239.39, 19,836.54 and 8,297.94

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Solution

The fourth proportional to 13,239.39, 19,836.54 and 8,297.94 is: 12,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.39 : 19,836.54 = 8,297.94 : x
  2. Step 2: Convert to fraction form
    13,239.39/19,836.54 = 8,297.94/x
  3. Step 3: Cross multiply
    13,239.39x = 19,836.54 × 8,297.94
  4. Step 4: Simplify right side
    13,239.39x = 164,602,418.73
  5. Step 5: Solve for x
    x = 164,602,418.73/13,239.39
  6. Step 6: Final answer
    x = 12,432.78

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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.