Home / 20,111.69-27,755.36-11,615.37

Finding the Fourth Proportional to 20,111.69, 27,755.36 and 11,615.37

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Solution

The fourth proportional to 20,111.69, 27,755.36 and 11,615.37 is: 16,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.69 : 27,755.36 = 11,615.37 : x
  2. Step 2: Convert to fraction form
    20,111.69/27,755.36 = 11,615.37/x
  3. Step 3: Cross multiply
    20,111.69x = 27,755.36 × 11,615.37
  4. Step 4: Simplify right side
    20,111.69x = 322,388,657.28
  5. Step 5: Solve for x
    x = 322,388,657.28/20,111.69
  6. Step 6: Final answer
    x = 16,029.91

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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.