Home / 12,456.72-17,190.36-6,791.64

Finding the Fourth Proportional to 12,456.72, 17,190.36 and 6,791.64

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Solution

The fourth proportional to 12,456.72, 17,190.36 and 6,791.64 is: 9,372.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.72 : 17,190.36 = 6,791.64 : x
  2. Step 2: Convert to fraction form
    12,456.72/17,190.36 = 6,791.64/x
  3. Step 3: Cross multiply
    12,456.72x = 17,190.36 × 6,791.64
  4. Step 4: Simplify right side
    12,456.72x = 116,750,736.59
  5. Step 5: Solve for x
    x = 116,750,736.59/12,456.72
  6. Step 6: Final answer
    x = 9,372.51

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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.