Home / 10,222.20-15,327.90-4,372.20

Finding the Fourth Proportional to 10,222.20, 15,327.90 and 4,372.20

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Solution

The fourth proportional to 10,222.20, 15,327.90 and 4,372.20 is: 6,555.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,222.20 : 15,327.90 = 4,372.20 : x
  2. Step 2: Convert to fraction form
    10,222.20/15,327.90 = 4,372.20/x
  3. Step 3: Cross multiply
    10,222.20x = 15,327.90 × 4,372.20
  4. Step 4: Simplify right side
    10,222.20x = 67,016,644.38
  5. Step 5: Solve for x
    x = 67,016,644.38/10,222.20
  6. Step 6: Final answer
    x = 6,555.99

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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.