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Finding the Fourth Proportional to 12,067.85, 18,090.43 and 6,222.89

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Solution

The fourth proportional to 12,067.85, 18,090.43 and 6,222.89 is: 9,328.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,067.85 : 18,090.43 = 6,222.89 : x
  2. Step 2: Convert to fraction form
    12,067.85/18,090.43 = 6,222.89/x
  3. Step 3: Cross multiply
    12,067.85x = 18,090.43 × 6,222.89
  4. Step 4: Simplify right side
    12,067.85x = 112,574,755.94
  5. Step 5: Solve for x
    x = 112,574,755.94/12,067.85
  6. Step 6: Final answer
    x = 9,328.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.