Home / 12,167.08-16,791.12-6,861.78

Finding the Fourth Proportional to 12,167.08, 16,791.12 and 6,861.78

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Solution

The fourth proportional to 12,167.08, 16,791.12 and 6,861.78 is: 9,469.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.08 : 16,791.12 = 6,861.78 : x
  2. Step 2: Convert to fraction form
    12,167.08/16,791.12 = 6,861.78/x
  3. Step 3: Cross multiply
    12,167.08x = 16,791.12 × 6,861.78
  4. Step 4: Simplify right side
    12,167.08x = 115,216,971.39
  5. Step 5: Solve for x
    x = 115,216,971.39/12,167.08
  6. Step 6: Final answer
    x = 9,469.57

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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.