Home / 20,092.20-27,724.64-11,139.62

Finding the Fourth Proportional to 20,092.20, 27,724.64 and 11,139.62

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Solution

The fourth proportional to 20,092.20, 27,724.64 and 11,139.62 is: 15,371.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,092.20 : 27,724.64 = 11,139.62 : x
  2. Step 2: Convert to fraction form
    20,092.20/27,724.64 = 11,139.62/x
  3. Step 3: Cross multiply
    20,092.20x = 27,724.64 × 11,139.62
  4. Step 4: Simplify right side
    20,092.20x = 308,841,954.24
  5. Step 5: Solve for x
    x = 308,841,954.24/20,092.20
  6. Step 6: Final answer
    x = 15,371.24

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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.