Home / 20,211.60-30,321.48-8,524.80

Finding the Fourth Proportional to 20,211.60, 30,321.48 and 8,524.80

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Solution

The fourth proportional to 20,211.60, 30,321.48 and 8,524.80 is: 12,788.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.60 : 30,321.48 = 8,524.80 : x
  2. Step 2: Convert to fraction form
    20,211.60/30,321.48 = 8,524.80/x
  3. Step 3: Cross multiply
    20,211.60x = 30,321.48 × 8,524.80
  4. Step 4: Simplify right side
    20,211.60x = 258,484,552.70
  5. Step 5: Solve for x
    x = 258,484,552.70/20,211.60
  6. Step 6: Final answer
    x = 12,788.92

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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.