Home / 18,286.35-27,430.55-5,137.70

Finding the Fourth Proportional to 18,286.35, 27,430.55 and 5,137.70

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Solution

The fourth proportional to 18,286.35, 27,430.55 and 5,137.70 is: 7,706.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.35 : 27,430.55 = 5,137.70 : x
  2. Step 2: Convert to fraction form
    18,286.35/27,430.55 = 5,137.70/x
  3. Step 3: Cross multiply
    18,286.35x = 27,430.55 × 5,137.70
  4. Step 4: Simplify right side
    18,286.35x = 140,929,773.89
  5. Step 5: Solve for x
    x = 140,929,773.89/18,286.35
  6. Step 6: Final answer
    x = 7,706.83

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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.