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Finding the Fourth Proportional to 11,992.55, 16,551.22 and 6,889.66

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Solution

The fourth proportional to 11,992.55, 16,551.22 and 6,889.66 is: 9,508.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,992.55 : 16,551.22 = 6,889.66 : x
  2. Step 2: Convert to fraction form
    11,992.55/16,551.22 = 6,889.66/x
  3. Step 3: Cross multiply
    11,992.55x = 16,551.22 × 6,889.66
  4. Step 4: Simplify right side
    11,992.55x = 114,032,278.39
  5. Step 5: Solve for x
    x = 114,032,278.39/11,992.55
  6. Step 6: Final answer
    x = 9,508.59

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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.