Home / 20,604.38-30,908.18-8,917.70

Finding the Fourth Proportional to 20,604.38, 30,908.18 and 8,917.70

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Solution

The fourth proportional to 20,604.38, 30,908.18 and 8,917.70 is: 13,377.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.38 : 30,908.18 = 8,917.70 : x
  2. Step 2: Convert to fraction form
    20,604.38/30,908.18 = 8,917.70/x
  3. Step 3: Cross multiply
    20,604.38x = 30,908.18 × 8,917.70
  4. Step 4: Simplify right side
    20,604.38x = 275,629,744.54
  5. Step 5: Solve for x
    x = 275,629,744.54/20,604.38
  6. Step 6: Final answer
    x = 13,377.24

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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.