Home / 20,640.60-30,895.20-10,766.34

Finding the Fourth Proportional to 20,640.60, 30,895.20 and 10,766.34

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Solution

The fourth proportional to 20,640.60, 30,895.20 and 10,766.34 is: 16,115.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.60 : 30,895.20 = 10,766.34 : x
  2. Step 2: Convert to fraction form
    20,640.60/30,895.20 = 10,766.34/x
  3. Step 3: Cross multiply
    20,640.60x = 30,895.20 × 10,766.34
  4. Step 4: Simplify right side
    20,640.60x = 332,628,227.57
  5. Step 5: Solve for x
    x = 332,628,227.57/20,640.60
  6. Step 6: Final answer
    x = 16,115.24

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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.