Home / 20,757.16-31,137.36-10,360

Finding the Fourth Proportional to 20,757.16, 31,137.36 and 10,360

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Solution

The fourth proportional to 20,757.16, 31,137.36 and 10,360 is: 15,540.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.16 : 31,137.36 = 10,360 : x
  2. Step 2: Convert to fraction form
    20,757.16/31,137.36 = 10,360/x
  3. Step 3: Cross multiply
    20,757.16x = 31,137.36 × 10,360
  4. Step 4: Simplify right side
    20,757.16x = 322,583,049.60
  5. Step 5: Solve for x
    x = 322,583,049.60/20,757.16
  6. Step 6: Final answer
    x = 15,540.81

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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.