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Finding the Fourth Proportional to 30,481.19, 45,712.48 and 10,755.14

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Solution

The fourth proportional to 30,481.19, 45,712.48 and 10,755.14 is: 16,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,481.19 : 45,712.48 = 10,755.14 : x
  2. Step 2: Convert to fraction form
    30,481.19/45,712.48 = 10,755.14/x
  3. Step 3: Cross multiply
    30,481.19x = 45,712.48 × 10,755.14
  4. Step 4: Simplify right side
    30,481.19x = 491,644,122.15
  5. Step 5: Solve for x
    x = 491,644,122.15/30,481.19
  6. Step 6: Final answer
    x = 16,129.43

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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.