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Finding the Fourth Proportional to 17,679.72, 24,401.44 and 11,711.64

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Solution

The fourth proportional to 17,679.72, 24,401.44 and 11,711.64 is: 16,164.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,679.72 : 24,401.44 = 11,711.64 : x
  2. Step 2: Convert to fraction form
    17,679.72/24,401.44 = 11,711.64/x
  3. Step 3: Cross multiply
    17,679.72x = 24,401.44 × 11,711.64
  4. Step 4: Simplify right side
    17,679.72x = 285,780,880.76
  5. Step 5: Solve for x
    x = 285,780,880.76/17,679.72
  6. Step 6: Final answer
    x = 16,164.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.