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Finding the Fourth Proportional to 12,558, 18,837 and 7,086

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Solution

The fourth proportional to 12,558, 18,837 and 7,086 is: 10,629

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558 : 18,837 = 7,086 : x
  2. Step 2: Convert to fraction form
    12,558/18,837 = 7,086/x
  3. Step 3: Cross multiply
    12,558x = 18,837 × 7,086
  4. Step 4: Simplify right side
    12,558x = 133,478,982
  5. Step 5: Solve for x
    x = 133,478,982/12,558
  6. Step 6: Final answer
    x = 10,629

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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.