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Finding the Fourth Proportional to 17,611.92, 26,388.16 and 8,715.39

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Solution

The fourth proportional to 17,611.92, 26,388.16 and 8,715.39 is: 13,058.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611.92 : 26,388.16 = 8,715.39 : x
  2. Step 2: Convert to fraction form
    17,611.92/26,388.16 = 8,715.39/x
  3. Step 3: Cross multiply
    17,611.92x = 26,388.16 × 8,715.39
  4. Step 4: Simplify right side
    17,611.92x = 229,983,105.78
  5. Step 5: Solve for x
    x = 229,983,105.78/17,611.92
  6. Step 6: Final answer
    x = 13,058.38

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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.