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Finding the Fourth Proportional to 18,031.56, 27,051.60 and 5,719.56

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Solution

The fourth proportional to 18,031.56, 27,051.60 and 5,719.56 is: 8,580.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.56 : 27,051.60 = 5,719.56 : x
  2. Step 2: Convert to fraction form
    18,031.56/27,051.60 = 5,719.56/x
  3. Step 3: Cross multiply
    18,031.56x = 27,051.60 × 5,719.56
  4. Step 4: Simplify right side
    18,031.56x = 154,723,249.30
  5. Step 5: Solve for x
    x = 154,723,249.30/18,031.56
  6. Step 6: Final answer
    x = 8,580.69

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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.