Home / 20,140.92-27,781.92-13,842.36

Finding the Fourth Proportional to 20,140.92, 27,781.92 and 13,842.36

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Solution

The fourth proportional to 20,140.92, 27,781.92 and 13,842.36 is: 19,093.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.92 : 27,781.92 = 13,842.36 : x
  2. Step 2: Convert to fraction form
    20,140.92/27,781.92 = 13,842.36/x
  3. Step 3: Cross multiply
    20,140.92x = 27,781.92 × 13,842.36
  4. Step 4: Simplify right side
    20,140.92x = 384,567,338.13
  5. Step 5: Solve for x
    x = 384,567,338.13/20,140.92
  6. Step 6: Final answer
    x = 19,093.83

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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.