Home / 20,936.48-31,404.76-5,141.52

Finding the Fourth Proportional to 20,936.48, 31,404.76 and 5,141.52

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Solution

The fourth proportional to 20,936.48, 31,404.76 and 5,141.52 is: 7,712.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.48 : 31,404.76 = 5,141.52 : x
  2. Step 2: Convert to fraction form
    20,936.48/31,404.76 = 5,141.52/x
  3. Step 3: Cross multiply
    20,936.48x = 31,404.76 × 5,141.52
  4. Step 4: Simplify right side
    20,936.48x = 161,468,201.64
  5. Step 5: Solve for x
    x = 161,468,201.64/20,936.48
  6. Step 6: Final answer
    x = 7,712.29

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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.