Home / 28,183.11-38,859.15-18,111.97

Finding the Fourth Proportional to 28,183.11, 38,859.15 and 18,111.97

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Solution

The fourth proportional to 28,183.11, 38,859.15 and 18,111.97 is: 24,972.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,183.11 : 38,859.15 = 18,111.97 : x
  2. Step 2: Convert to fraction form
    28,183.11/38,859.15 = 18,111.97/x
  3. Step 3: Cross multiply
    28,183.11x = 38,859.15 × 18,111.97
  4. Step 4: Simplify right side
    28,183.11x = 703,815,759.03
  5. Step 5: Solve for x
    x = 703,815,759.03/28,183.11
  6. Step 6: Final answer
    x = 24,972.96

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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.