Home / 12,170.29-16,789.67-7,131.96

Finding the Fourth Proportional to 12,170.29, 16,789.67 and 7,131.96

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Solution

The fourth proportional to 12,170.29, 16,789.67 and 7,131.96 is: 9,838.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.29 : 16,789.67 = 7,131.96 : x
  2. Step 2: Convert to fraction form
    12,170.29/16,789.67 = 7,131.96/x
  3. Step 3: Cross multiply
    12,170.29x = 16,789.67 × 7,131.96
  4. Step 4: Simplify right side
    12,170.29x = 119,743,135.25
  5. Step 5: Solve for x
    x = 119,743,135.25/12,170.29
  6. Step 6: Final answer
    x = 9,838.97

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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.