Home / 18,868.22-28,306.42-5,721.60

Finding the Fourth Proportional to 18,868.22, 28,306.42 and 5,721.60

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Solution

The fourth proportional to 18,868.22, 28,306.42 and 5,721.60 is: 8,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.22 : 28,306.42 = 5,721.60 : x
  2. Step 2: Convert to fraction form
    18,868.22/28,306.42 = 5,721.60/x
  3. Step 3: Cross multiply
    18,868.22x = 28,306.42 × 5,721.60
  4. Step 4: Simplify right side
    18,868.22x = 161,958,012.67
  5. Step 5: Solve for x
    x = 161,958,012.67/18,868.22
  6. Step 6: Final answer
    x = 8,583.64

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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.