Home / 20,206.60-30,313.98-8,519.80

Finding the Fourth Proportional to 20,206.60, 30,313.98 and 8,519.80

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Solution

The fourth proportional to 20,206.60, 30,313.98 and 8,519.80 is: 12,781.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.60 : 30,313.98 = 8,519.80 : x
  2. Step 2: Convert to fraction form
    20,206.60/30,313.98 = 8,519.80/x
  3. Step 3: Cross multiply
    20,206.60x = 30,313.98 × 8,519.80
  4. Step 4: Simplify right side
    20,206.60x = 258,269,046.80
  5. Step 5: Solve for x
    x = 258,269,046.80/20,206.60
  6. Step 6: Final answer
    x = 12,781.42

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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.