Home / 20,676.74-31,020.32-6,638.03

Finding the Fourth Proportional to 20,676.74, 31,020.32 and 6,638.03

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Solution

The fourth proportional to 20,676.74, 31,020.32 and 6,638.03 is: 9,958.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.74 : 31,020.32 = 6,638.03 : x
  2. Step 2: Convert to fraction form
    20,676.74/31,020.32 = 6,638.03/x
  3. Step 3: Cross multiply
    20,676.74x = 31,020.32 × 6,638.03
  4. Step 4: Simplify right side
    20,676.74x = 205,913,626.48
  5. Step 5: Solve for x
    x = 205,913,626.48/20,676.74
  6. Step 6: Final answer
    x = 9,958.71

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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.