Home / 20,749.26-31,234.62-18,606

Finding the Fourth Proportional to 20,749.26, 31,234.62 and 18,606

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Solution

The fourth proportional to 20,749.26, 31,234.62 and 18,606 is: 28,008.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.26 : 31,234.62 = 18,606 : x
  2. Step 2: Convert to fraction form
    20,749.26/31,234.62 = 18,606/x
  3. Step 3: Cross multiply
    20,749.26x = 31,234.62 × 18,606
  4. Step 4: Simplify right side
    20,749.26x = 581,151,339.72
  5. Step 5: Solve for x
    x = 581,151,339.72/20,749.26
  6. Step 6: Final answer
    x = 28,008.29

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.