Home / 20,166.76-30,211.26-9,785.80

Finding the Fourth Proportional to 20,166.76, 30,211.26 and 9,785.80

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Solution

The fourth proportional to 20,166.76, 30,211.26 and 9,785.80 is: 14,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,166.76 : 30,211.26 = 9,785.80 : x
  2. Step 2: Convert to fraction form
    20,166.76/30,211.26 = 9,785.80/x
  3. Step 3: Cross multiply
    20,166.76x = 30,211.26 × 9,785.80
  4. Step 4: Simplify right side
    20,166.76x = 295,641,348.11
  5. Step 5: Solve for x
    x = 295,641,348.11/20,166.76
  6. Step 6: Final answer
    x = 14,659.83

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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.