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Finding the Fourth Proportional to 12,202.80, 16,837.38 and 7,167.84

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Solution

The fourth proportional to 12,202.80, 16,837.38 and 7,167.84 is: 9,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,202.80 : 16,837.38 = 7,167.84 : x
  2. Step 2: Convert to fraction form
    12,202.80/16,837.38 = 7,167.84/x
  3. Step 3: Cross multiply
    12,202.80x = 16,837.38 × 7,167.84
  4. Step 4: Simplify right side
    12,202.80x = 120,687,645.86
  5. Step 5: Solve for x
    x = 120,687,645.86/12,202.80
  6. Step 6: Final answer
    x = 9,890.16

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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.