Home / 19,906.27-29,859.43-5,115.31

Finding the Fourth Proportional to 19,906.27, 29,859.43 and 5,115.31

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Solution

The fourth proportional to 19,906.27, 29,859.43 and 5,115.31 is: 7,672.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,906.27 : 29,859.43 = 5,115.31 : x
  2. Step 2: Convert to fraction form
    19,906.27/29,859.43 = 5,115.31/x
  3. Step 3: Cross multiply
    19,906.27x = 29,859.43 × 5,115.31
  4. Step 4: Simplify right side
    19,906.27x = 152,740,240.87
  5. Step 5: Solve for x
    x = 152,740,240.87/19,906.27
  6. Step 6: Final answer
    x = 7,672.97

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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.