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Finding the Fourth Proportional to 15,042.96, 20,761.09 and 8,755.34

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Solution

The fourth proportional to 15,042.96, 20,761.09 and 8,755.34 is: 12,083.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042.96 : 20,761.09 = 8,755.34 : x
  2. Step 2: Convert to fraction form
    15,042.96/20,761.09 = 8,755.34/x
  3. Step 3: Cross multiply
    15,042.96x = 20,761.09 × 8,755.34
  4. Step 4: Simplify right side
    15,042.96x = 181,770,276.03
  5. Step 5: Solve for x
    x = 181,770,276.03/15,042.96
  6. Step 6: Final answer
    x = 12,083.41

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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.