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Finding the Fourth Proportional to 17,745, 26,622 and 6,651.72

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Solution

The fourth proportional to 17,745, 26,622 and 6,651.72 is: 9,979.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,745 : 26,622 = 6,651.72 : x
  2. Step 2: Convert to fraction form
    17,745/26,622 = 6,651.72/x
  3. Step 3: Cross multiply
    17,745x = 26,622 × 6,651.72
  4. Step 4: Simplify right side
    17,745x = 177,082,089.84
  5. Step 5: Solve for x
    x = 177,082,089.84/17,745
  6. Step 6: Final answer
    x = 9,979.27

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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.