Home / 20,644.72-30,975.28-6,606.90

Finding the Fourth Proportional to 20,644.72, 30,975.28 and 6,606.90

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Solution

The fourth proportional to 20,644.72, 30,975.28 and 6,606.90 is: 9,912.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.72 : 30,975.28 = 6,606.90 : x
  2. Step 2: Convert to fraction form
    20,644.72/30,975.28 = 6,606.90/x
  3. Step 3: Cross multiply
    20,644.72x = 30,975.28 × 6,606.90
  4. Step 4: Simplify right side
    20,644.72x = 204,650,577.43
  5. Step 5: Solve for x
    x = 204,650,577.43/20,644.72
  6. Step 6: Final answer
    x = 9,912.97

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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.