Home / 20,102.70-27,741.75-11,150.31

Finding the Fourth Proportional to 20,102.70, 27,741.75 and 11,150.31

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Solution

The fourth proportional to 20,102.70, 27,741.75 and 11,150.31 is: 15,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.70 : 27,741.75 = 11,150.31 : x
  2. Step 2: Convert to fraction form
    20,102.70/27,741.75 = 11,150.31/x
  3. Step 3: Cross multiply
    20,102.70x = 27,741.75 × 11,150.31
  4. Step 4: Simplify right side
    20,102.70x = 309,329,112.44
  5. Step 5: Solve for x
    x = 309,329,112.44/20,102.70
  6. Step 6: Final answer
    x = 15,387.44

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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.