Home / 20,638.24-28,479.99-11,683.96

Finding the Fourth Proportional to 20,638.24, 28,479.99 and 11,683.96

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Solution

The fourth proportional to 20,638.24, 28,479.99 and 11,683.96 is: 16,123.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.24 : 28,479.99 = 11,683.96 : x
  2. Step 2: Convert to fraction form
    20,638.24/28,479.99 = 11,683.96/x
  3. Step 3: Cross multiply
    20,638.24x = 28,479.99 × 11,683.96
  4. Step 4: Simplify right side
    20,638.24x = 332,759,063.96
  5. Step 5: Solve for x
    x = 332,759,063.96/20,638.24
  6. Step 6: Final answer
    x = 16,123.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.