Home / 20,066.85-27,689.97-11,112.12

Finding the Fourth Proportional to 20,066.85, 27,689.97 and 11,112.12

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Solution

The fourth proportional to 20,066.85, 27,689.97 and 11,112.12 is: 15,333.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,066.85 : 27,689.97 = 11,112.12 : x
  2. Step 2: Convert to fraction form
    20,066.85/27,689.97 = 11,112.12/x
  3. Step 3: Cross multiply
    20,066.85x = 27,689.97 × 11,112.12
  4. Step 4: Simplify right side
    20,066.85x = 307,694,269.44
  5. Step 5: Solve for x
    x = 307,694,269.44/20,066.85
  6. Step 6: Final answer
    x = 15,333.46

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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.