Home / 20,957.38-28,933.14-13,893.37

Finding the Fourth Proportional to 20,957.38, 28,933.14 and 13,893.37

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Solution

The fourth proportional to 20,957.38, 28,933.14 and 13,893.37 is: 19,180.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.38 : 28,933.14 = 13,893.37 : x
  2. Step 2: Convert to fraction form
    20,957.38/28,933.14 = 13,893.37/x
  3. Step 3: Cross multiply
    20,957.38x = 28,933.14 × 13,893.37
  4. Step 4: Simplify right side
    20,957.38x = 401,978,819.28
  5. Step 5: Solve for x
    x = 401,978,819.28/20,957.38
  6. Step 6: Final answer
    x = 19,180.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.