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Finding the Fourth Proportional to 17,958.72, 26,934.03 and 6,861.45

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Solution

The fourth proportional to 17,958.72, 26,934.03 and 6,861.45 is: 10,290.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,958.72 : 26,934.03 = 6,861.45 : x
  2. Step 2: Convert to fraction form
    17,958.72/26,934.03 = 6,861.45/x
  3. Step 3: Cross multiply
    17,958.72x = 26,934.03 × 6,861.45
  4. Step 4: Simplify right side
    17,958.72x = 184,806,500.14
  5. Step 5: Solve for x
    x = 184,806,500.14/17,958.72
  6. Step 6: Final answer
    x = 10,290.63

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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.