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Finding the Fourth Proportional to 17,861.68, 26,786.36 and 7,328.71

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Solution

The fourth proportional to 17,861.68, 26,786.36 and 7,328.71 is: 10,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,861.68 : 26,786.36 = 7,328.71 : x
  2. Step 2: Convert to fraction form
    17,861.68/26,786.36 = 7,328.71/x
  3. Step 3: Cross multiply
    17,861.68x = 26,786.36 × 7,328.71
  4. Step 4: Simplify right side
    17,861.68x = 196,309,516.20
  5. Step 5: Solve for x
    x = 196,309,516.20/17,861.68
  6. Step 6: Final answer
    x = 10,990.54

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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.