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Finding the Fourth Proportional to 12,791.54, 17,638.22 and 8,759.04

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Solution

The fourth proportional to 12,791.54, 17,638.22 and 8,759.04 is: 12,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.54 : 17,638.22 = 8,759.04 : x
  2. Step 2: Convert to fraction form
    12,791.54/17,638.22 = 8,759.04/x
  3. Step 3: Cross multiply
    12,791.54x = 17,638.22 × 8,759.04
  4. Step 4: Simplify right side
    12,791.54x = 154,493,874.51
  5. Step 5: Solve for x
    x = 154,493,874.51/12,791.54
  6. Step 6: Final answer
    x = 12,077.82

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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.