Home / 20,239.56-30,359.22-5,447.21

Finding the Fourth Proportional to 20,239.56, 30,359.22 and 5,447.21

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Solution

The fourth proportional to 20,239.56, 30,359.22 and 5,447.21 is: 8,170.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.56 : 30,359.22 = 5,447.21 : x
  2. Step 2: Convert to fraction form
    20,239.56/30,359.22 = 5,447.21/x
  3. Step 3: Cross multiply
    20,239.56x = 30,359.22 × 5,447.21
  4. Step 4: Simplify right side
    20,239.56x = 165,372,894.98
  5. Step 5: Solve for x
    x = 165,372,894.98/20,239.56
  6. Step 6: Final answer
    x = 8,170.78

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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.