Home / 20,290.75-30,443.05-10,931.73

Finding the Fourth Proportional to 20,290.75, 30,443.05 and 10,931.73

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Solution

The fourth proportional to 20,290.75, 30,443.05 and 10,931.73 is: 16,401.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.75 : 30,443.05 = 10,931.73 : x
  2. Step 2: Convert to fraction form
    20,290.75/30,443.05 = 10,931.73/x
  3. Step 3: Cross multiply
    20,290.75x = 30,443.05 × 10,931.73
  4. Step 4: Simplify right side
    20,290.75x = 332,795,202.98
  5. Step 5: Solve for x
    x = 332,795,202.98/20,290.75
  6. Step 6: Final answer
    x = 16,401.33

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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.