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Finding the Fourth Proportional to 18,503.89, 27,747.60 and 5,353.15

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Solution

The fourth proportional to 18,503.89, 27,747.60 and 5,353.15 is: 8,027.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.89 : 27,747.60 = 5,353.15 : x
  2. Step 2: Convert to fraction form
    18,503.89/27,747.60 = 5,353.15/x
  3. Step 3: Cross multiply
    18,503.89x = 27,747.60 × 5,353.15
  4. Step 4: Simplify right side
    18,503.89x = 148,537,064.94
  5. Step 5: Solve for x
    x = 148,537,064.94/18,503.89
  6. Step 6: Final answer
    x = 8,027.34

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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.