Home / 20,734.43-31,110.83-10,871.36

Finding the Fourth Proportional to 20,734.43, 31,110.83 and 10,871.36

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Solution

The fourth proportional to 20,734.43, 31,110.83 and 10,871.36 is: 16,311.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.43 : 31,110.83 = 10,871.36 : x
  2. Step 2: Convert to fraction form
    20,734.43/31,110.83 = 10,871.36/x
  3. Step 3: Cross multiply
    20,734.43x = 31,110.83 × 10,871.36
  4. Step 4: Simplify right side
    20,734.43x = 338,217,216.50
  5. Step 5: Solve for x
    x = 338,217,216.50/20,734.43
  6. Step 6: Final answer
    x = 16,311.86

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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.