Home / 20,329.82-30,439.37-15,811.19

Finding the Fourth Proportional to 20,329.82, 30,439.37 and 15,811.19

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Solution

The fourth proportional to 20,329.82, 30,439.37 and 15,811.19 is: 23,673.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,329.82 : 30,439.37 = 15,811.19 : x
  2. Step 2: Convert to fraction form
    20,329.82/30,439.37 = 15,811.19/x
  3. Step 3: Cross multiply
    20,329.82x = 30,439.37 × 15,811.19
  4. Step 4: Simplify right side
    20,329.82x = 481,282,778.18
  5. Step 5: Solve for x
    x = 481,282,778.18/20,329.82
  6. Step 6: Final answer
    x = 23,673.73

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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.