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Finding the Fourth Proportional to 17,609.78, 26,408.09 and 5,760.80

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Solution

The fourth proportional to 17,609.78, 26,408.09 and 5,760.80 is: 8,639.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,609.78 : 26,408.09 = 5,760.80 : x
  2. Step 2: Convert to fraction form
    17,609.78/26,408.09 = 5,760.80/x
  3. Step 3: Cross multiply
    17,609.78x = 26,408.09 × 5,760.80
  4. Step 4: Simplify right side
    17,609.78x = 152,131,724.87
  5. Step 5: Solve for x
    x = 152,131,724.87/17,609.78
  6. Step 6: Final answer
    x = 8,639.05

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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.