Home / 18,786.34-28,183.82-5,638.96

Finding the Fourth Proportional to 18,786.34, 28,183.82 and 5,638.96

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Solution

The fourth proportional to 18,786.34, 28,183.82 and 5,638.96 is: 8,459.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.34 : 28,183.82 = 5,638.96 : x
  2. Step 2: Convert to fraction form
    18,786.34/28,183.82 = 5,638.96/x
  3. Step 3: Cross multiply
    18,786.34x = 28,183.82 × 5,638.96
  4. Step 4: Simplify right side
    18,786.34x = 158,927,306.81
  5. Step 5: Solve for x
    x = 158,927,306.81/18,786.34
  6. Step 6: Final answer
    x = 8,459.73

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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.