Home / 20,161.98-30,249.12-10,308.18

Finding the Fourth Proportional to 20,161.98, 30,249.12 and 10,308.18

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Solution

The fourth proportional to 20,161.98, 30,249.12 and 10,308.18 is: 15,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.98 : 30,249.12 = 10,308.18 : x
  2. Step 2: Convert to fraction form
    20,161.98/30,249.12 = 10,308.18/x
  3. Step 3: Cross multiply
    20,161.98x = 30,249.12 × 10,308.18
  4. Step 4: Simplify right side
    20,161.98x = 311,813,260.37
  5. Step 5: Solve for x
    x = 311,813,260.37/20,161.98
  6. Step 6: Final answer
    x = 15,465.41

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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.