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Finding the Fourth Proportional to 18,898, 28,348.20 and 5,751.34

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Solution

The fourth proportional to 18,898, 28,348.20 and 5,751.34 is: 8,627.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898 : 28,348.20 = 5,751.34 : x
  2. Step 2: Convert to fraction form
    18,898/28,348.20 = 5,751.34/x
  3. Step 3: Cross multiply
    18,898x = 28,348.20 × 5,751.34
  4. Step 4: Simplify right side
    18,898x = 163,040,136.59
  5. Step 5: Solve for x
    x = 163,040,136.59/18,898
  6. Step 6: Final answer
    x = 8,627.38

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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.