Home / 20,764.37-31,145.43-10,223.88

Finding the Fourth Proportional to 20,764.37, 31,145.43 and 10,223.88

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Solution

The fourth proportional to 20,764.37, 31,145.43 and 10,223.88 is: 15,335.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.37 : 31,145.43 = 10,223.88 : x
  2. Step 2: Convert to fraction form
    20,764.37/31,145.43 = 10,223.88/x
  3. Step 3: Cross multiply
    20,764.37x = 31,145.43 × 10,223.88
  4. Step 4: Simplify right side
    20,764.37x = 318,427,138.87
  5. Step 5: Solve for x
    x = 318,427,138.87/20,764.37
  6. Step 6: Final answer
    x = 15,335.27

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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.