Home / 18,868.50-28,306.84-5,721.86

Finding the Fourth Proportional to 18,868.50, 28,306.84 and 5,721.86

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Solution

The fourth proportional to 18,868.50, 28,306.84 and 5,721.86 is: 8,584.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.50 : 28,306.84 = 5,721.86 : x
  2. Step 2: Convert to fraction form
    18,868.50/28,306.84 = 5,721.86/x
  3. Step 3: Cross multiply
    18,868.50x = 28,306.84 × 5,721.86
  4. Step 4: Simplify right side
    18,868.50x = 161,967,775.52
  5. Step 5: Solve for x
    x = 161,967,775.52/18,868.50
  6. Step 6: Final answer
    x = 8,584.03

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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.