Home / 20,936.14-31,404.28-5,141.24

Finding the Fourth Proportional to 20,936.14, 31,404.28 and 5,141.24

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Solution

The fourth proportional to 20,936.14, 31,404.28 and 5,141.24 is: 7,711.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.14 : 31,404.28 = 5,141.24 : x
  2. Step 2: Convert to fraction form
    20,936.14/31,404.28 = 5,141.24/x
  3. Step 3: Cross multiply
    20,936.14x = 31,404.28 × 5,141.24
  4. Step 4: Simplify right side
    20,936.14x = 161,456,940.51
  5. Step 5: Solve for x
    x = 161,456,940.51/20,936.14
  6. Step 6: Final answer
    x = 7,711.88

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1.5x scale

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.