Home / 20,367.96-30,553.02-7,221.72

Finding the Fourth Proportional to 20,367.96, 30,553.02 and 7,221.72

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Solution

The fourth proportional to 20,367.96, 30,553.02 and 7,221.72 is: 10,832.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,367.96 : 30,553.02 = 7,221.72 : x
  2. Step 2: Convert to fraction form
    20,367.96/30,553.02 = 7,221.72/x
  3. Step 3: Cross multiply
    20,367.96x = 30,553.02 × 7,221.72
  4. Step 4: Simplify right side
    20,367.96x = 220,645,355.59
  5. Step 5: Solve for x
    x = 220,645,355.59/20,367.96
  6. Step 6: Final answer
    x = 10,832.96

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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.