Home / 20,131.58-27,783.34-11,180.83

Finding the Fourth Proportional to 20,131.58, 27,783.34 and 11,180.83

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Solution

The fourth proportional to 20,131.58, 27,783.34 and 11,180.83 is: 15,430.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.58 : 27,783.34 = 11,180.83 : x
  2. Step 2: Convert to fraction form
    20,131.58/27,783.34 = 11,180.83/x
  3. Step 3: Cross multiply
    20,131.58x = 27,783.34 × 11,180.83
  4. Step 4: Simplify right side
    20,131.58x = 310,640,745.47
  5. Step 5: Solve for x
    x = 310,640,745.47/20,131.58
  6. Step 6: Final answer
    x = 15,430.52

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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.