Home / 12,186.75-16,817.31-6,809.49

Finding the Fourth Proportional to 12,186.75, 16,817.31 and 6,809.49

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Solution

The fourth proportional to 12,186.75, 16,817.31 and 6,809.49 is: 9,396.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.75 : 16,817.31 = 6,809.49 : x
  2. Step 2: Convert to fraction form
    12,186.75/16,817.31 = 6,809.49/x
  3. Step 3: Cross multiply
    12,186.75x = 16,817.31 × 6,809.49
  4. Step 4: Simplify right side
    12,186.75x = 114,517,304.27
  5. Step 5: Solve for x
    x = 114,517,304.27/12,186.75
  6. Step 6: Final answer
    x = 9,396.87

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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.