Home / 12,167.78-16,791.69-6,862.10

Finding the Fourth Proportional to 12,167.78, 16,791.69 and 6,862.10

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Solution

The fourth proportional to 12,167.78, 16,791.69 and 6,862.10 is: 9,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.78 : 16,791.69 = 6,862.10 : x
  2. Step 2: Convert to fraction form
    12,167.78/16,791.69 = 6,862.10/x
  3. Step 3: Cross multiply
    12,167.78x = 16,791.69 × 6,862.10
  4. Step 4: Simplify right side
    12,167.78x = 115,226,255.95
  5. Step 5: Solve for x
    x = 115,226,255.95/12,167.78
  6. Step 6: Final answer
    x = 9,469.78

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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.