Home / 20,372.21-30,560.23-7,221.45

Finding the Fourth Proportional to 20,372.21, 30,560.23 and 7,221.45

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Solution

The fourth proportional to 20,372.21, 30,560.23 and 7,221.45 is: 10,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.21 : 30,560.23 = 7,221.45 : x
  2. Step 2: Convert to fraction form
    20,372.21/30,560.23 = 7,221.45/x
  3. Step 3: Cross multiply
    20,372.21x = 30,560.23 × 7,221.45
  4. Step 4: Simplify right side
    20,372.21x = 220,689,172.93
  5. Step 5: Solve for x
    x = 220,689,172.93/20,372.21
  6. Step 6: Final answer
    x = 10,832.86

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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.