Home / 20,270.58-30,400.20-8,575.80

Finding the Fourth Proportional to 20,270.58, 30,400.20 and 8,575.80

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Solution

The fourth proportional to 20,270.58, 30,400.20 and 8,575.80 is: 12,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.58 : 30,400.20 = 8,575.80 : x
  2. Step 2: Convert to fraction form
    20,270.58/30,400.20 = 8,575.80/x
  3. Step 3: Cross multiply
    20,270.58x = 30,400.20 × 8,575.80
  4. Step 4: Simplify right side
    20,270.58x = 260,706,035.16
  5. Step 5: Solve for x
    x = 260,706,035.16/20,270.58
  6. Step 6: Final answer
    x = 12,861.30

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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.