Home / 18,861.48-26,031.11-11,311.97

Finding the Fourth Proportional to 18,861.48, 26,031.11 and 11,311.97

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Solution

The fourth proportional to 18,861.48, 26,031.11 and 11,311.97 is: 15,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.48 : 26,031.11 = 11,311.97 : x
  2. Step 2: Convert to fraction form
    18,861.48/26,031.11 = 11,311.97/x
  3. Step 3: Cross multiply
    18,861.48x = 26,031.11 × 11,311.97
  4. Step 4: Simplify right side
    18,861.48x = 294,463,190.54
  5. Step 5: Solve for x
    x = 294,463,190.54/18,861.48
  6. Step 6: Final answer
    x = 15,611.88

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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.