Home / 20,245.60-30,372.56-8,558.88

Finding the Fourth Proportional to 20,245.60, 30,372.56 and 8,558.88

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Solution

The fourth proportional to 20,245.60, 30,372.56 and 8,558.88 is: 12,840.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.60 : 30,372.56 = 8,558.88 : x
  2. Step 2: Convert to fraction form
    20,245.60/30,372.56 = 8,558.88/x
  3. Step 3: Cross multiply
    20,245.60x = 30,372.56 × 8,558.88
  4. Step 4: Simplify right side
    20,245.60x = 259,955,096.33
  5. Step 5: Solve for x
    x = 259,955,096.33/20,245.60
  6. Step 6: Final answer
    x = 12,840.08

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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.