Home / 20,329.18-28,105.62-15,015.58

Finding the Fourth Proportional to 20,329.18, 28,105.62 and 15,015.58

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Solution

The fourth proportional to 20,329.18, 28,105.62 and 15,015.58 is: 20,759.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,329.18 : 28,105.62 = 15,015.58 : x
  2. Step 2: Convert to fraction form
    20,329.18/28,105.62 = 15,015.58/x
  3. Step 3: Cross multiply
    20,329.18x = 28,105.62 × 15,015.58
  4. Step 4: Simplify right side
    20,329.18x = 422,022,185.56
  5. Step 5: Solve for x
    x = 422,022,185.56/20,329.18
  6. Step 6: Final answer
    x = 20,759.43

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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.