Home / 20,192.89-27,867-11,239.82

Finding the Fourth Proportional to 20,192.89, 27,867 and 11,239.82

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Solution

The fourth proportional to 20,192.89, 27,867 and 11,239.82 is: 15,511.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.89 : 27,867 = 11,239.82 : x
  2. Step 2: Convert to fraction form
    20,192.89/27,867 = 11,239.82/x
  3. Step 3: Cross multiply
    20,192.89x = 27,867 × 11,239.82
  4. Step 4: Simplify right side
    20,192.89x = 313,220,063.94
  5. Step 5: Solve for x
    x = 313,220,063.94/20,192.89
  6. Step 6: Final answer
    x = 15,511.41

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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.