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Finding the Fourth Proportional to 17,561.54, 26,318.92 and 7,690.08

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Solution

The fourth proportional to 17,561.54, 26,318.92 and 7,690.08 is: 11,524.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,561.54 : 26,318.92 = 7,690.08 : x
  2. Step 2: Convert to fraction form
    17,561.54/26,318.92 = 7,690.08/x
  3. Step 3: Cross multiply
    17,561.54x = 26,318.92 × 7,690.08
  4. Step 4: Simplify right side
    17,561.54x = 202,394,600.31
  5. Step 5: Solve for x
    x = 202,394,600.31/17,561.54
  6. Step 6: Final answer
    x = 11,524.88

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1.5x scale

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.