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Finding the Fourth Proportional to 17,720.78, 26,597.43 and 8,961.84

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Solution

The fourth proportional to 17,720.78, 26,597.43 and 8,961.84 is: 13,450.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.78 : 26,597.43 = 8,961.84 : x
  2. Step 2: Convert to fraction form
    17,720.78/26,597.43 = 8,961.84/x
  3. Step 3: Cross multiply
    17,720.78x = 26,597.43 × 8,961.84
  4. Step 4: Simplify right side
    17,720.78x = 238,361,912.07
  5. Step 5: Solve for x
    x = 238,361,912.07/17,720.78
  6. Step 6: Final answer
    x = 13,450.99

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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.