Home / 20,087.51-27,722.42-11,137.82

Finding the Fourth Proportional to 20,087.51, 27,722.42 and 11,137.82

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Solution

The fourth proportional to 20,087.51, 27,722.42 and 11,137.82 is: 15,371.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.51 : 27,722.42 = 11,137.82 : x
  2. Step 2: Convert to fraction form
    20,087.51/27,722.42 = 11,137.82/x
  3. Step 3: Cross multiply
    20,087.51x = 27,722.42 × 11,137.82
  4. Step 4: Simplify right side
    20,087.51x = 308,767,323.92
  5. Step 5: Solve for x
    x = 308,767,323.92/20,087.51
  6. Step 6: Final answer
    x = 15,371.11

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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.