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Finding the Fourth Proportional to 12,170.90, 16,791.89 and 6,792.45

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Solution

The fourth proportional to 12,170.90, 16,791.89 and 6,792.45 is: 9,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.90 : 16,791.89 = 6,792.45 : x
  2. Step 2: Convert to fraction form
    12,170.90/16,791.89 = 6,792.45/x
  3. Step 3: Cross multiply
    12,170.90x = 16,791.89 × 6,792.45
  4. Step 4: Simplify right side
    12,170.90x = 114,058,039.27
  5. Step 5: Solve for x
    x = 114,058,039.27/12,170.90
  6. Step 6: Final answer
    x = 9,371.38

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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.