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Finding the Fourth Proportional to 17,661.79, 26,496.59 and 5,819.21

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Solution

The fourth proportional to 17,661.79, 26,496.59 and 5,819.21 is: 8,730.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,661.79 : 26,496.59 = 5,819.21 : x
  2. Step 2: Convert to fraction form
    17,661.79/26,496.59 = 5,819.21/x
  3. Step 3: Cross multiply
    17,661.79x = 26,496.59 × 5,819.21
  4. Step 4: Simplify right side
    17,661.79x = 154,189,311.28
  5. Step 5: Solve for x
    x = 154,189,311.28/17,661.79
  6. Step 6: Final answer
    x = 8,730.11

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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.