Home / 20,821.23-28,742.67-14,469.27

Finding the Fourth Proportional to 20,821.23, 28,742.67 and 14,469.27

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Solution

The fourth proportional to 20,821.23, 28,742.67 and 14,469.27 is: 19,974.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821.23 : 28,742.67 = 14,469.27 : x
  2. Step 2: Convert to fraction form
    20,821.23/28,742.67 = 14,469.27/x
  3. Step 3: Cross multiply
    20,821.23x = 28,742.67 × 14,469.27
  4. Step 4: Simplify right side
    20,821.23x = 415,885,452.75
  5. Step 5: Solve for x
    x = 415,885,452.75/20,821.23
  6. Step 6: Final answer
    x = 19,974.11

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Why These Related Problems?

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