Home / 20,087.87-27,721.27-11,135.48

Finding the Fourth Proportional to 20,087.87, 27,721.27 and 11,135.48

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Solution

The fourth proportional to 20,087.87, 27,721.27 and 11,135.48 is: 15,366.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.87 : 27,721.27 = 11,135.48 : x
  2. Step 2: Convert to fraction form
    20,087.87/27,721.27 = 11,135.48/x
  3. Step 3: Cross multiply
    20,087.87x = 27,721.27 × 11,135.48
  4. Step 4: Simplify right side
    20,087.87x = 308,689,522.97
  5. Step 5: Solve for x
    x = 308,689,522.97/20,087.87
  6. Step 6: Final answer
    x = 15,366.97

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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.