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Finding the Fourth Proportional to 11,755.88, 16,223.11 and 7,042.89

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Solution

The fourth proportional to 11,755.88, 16,223.11 and 7,042.89 is: 9,719.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,755.88 : 16,223.11 = 7,042.89 : x
  2. Step 2: Convert to fraction form
    11,755.88/16,223.11 = 7,042.89/x
  3. Step 3: Cross multiply
    11,755.88x = 16,223.11 × 7,042.89
  4. Step 4: Simplify right side
    11,755.88x = 114,257,579.19
  5. Step 5: Solve for x
    x = 114,257,579.19/11,755.88
  6. Step 6: Final answer
    x = 9,719.19

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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.