Home / 20,083.45-27,714.45-11,131.79

Finding the Fourth Proportional to 20,083.45, 27,714.45 and 11,131.79

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Solution

The fourth proportional to 20,083.45, 27,714.45 and 11,131.79 is: 15,361.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.45 : 27,714.45 = 11,131.79 : x
  2. Step 2: Convert to fraction form
    20,083.45/27,714.45 = 11,131.79/x
  3. Step 3: Cross multiply
    20,083.45x = 27,714.45 × 11,131.79
  4. Step 4: Simplify right side
    20,083.45x = 308,511,298.79
  5. Step 5: Solve for x
    x = 308,511,298.79/20,083.45
  6. Step 6: Final answer
    x = 15,361.47

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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.