Home / 20,735.96-31,120.34-9,057.38

Finding the Fourth Proportional to 20,735.96, 31,120.34 and 9,057.38

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Solution

The fourth proportional to 20,735.96, 31,120.34 and 9,057.38 is: 13,593.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.96 : 31,120.34 = 9,057.38 : x
  2. Step 2: Convert to fraction form
    20,735.96/31,120.34 = 9,057.38/x
  3. Step 3: Cross multiply
    20,735.96x = 31,120.34 × 9,057.38
  4. Step 4: Simplify right side
    20,735.96x = 281,868,544.22
  5. Step 5: Solve for x
    x = 281,868,544.22/20,735.96
  6. Step 6: Final answer
    x = 13,593.23

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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.