Home / 20,201.72-30,297.72-8,508.56

Finding the Fourth Proportional to 20,201.72, 30,297.72 and 8,508.56

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Solution

The fourth proportional to 20,201.72, 30,297.72 and 8,508.56 is: 12,760.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.72 : 30,297.72 = 8,508.56 : x
  2. Step 2: Convert to fraction form
    20,201.72/30,297.72 = 8,508.56/x
  3. Step 3: Cross multiply
    20,201.72x = 30,297.72 × 8,508.56
  4. Step 4: Simplify right side
    20,201.72x = 257,789,968.48
  5. Step 5: Solve for x
    x = 257,789,968.48/20,201.72
  6. Step 6: Final answer
    x = 12,760.79

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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.