Home / 20,066.46-27,691.72-10,991.86

Finding the Fourth Proportional to 20,066.46, 27,691.72 and 10,991.86

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Solution

The fourth proportional to 20,066.46, 27,691.72 and 10,991.86 is: 15,168.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,066.46 : 27,691.72 = 10,991.86 : x
  2. Step 2: Convert to fraction form
    20,066.46/27,691.72 = 10,991.86/x
  3. Step 3: Cross multiply
    20,066.46x = 27,691.72 × 10,991.86
  4. Step 4: Simplify right side
    20,066.46x = 304,383,385.21
  5. Step 5: Solve for x
    x = 304,383,385.21/20,066.46
  6. Step 6: Final answer
    x = 15,168.77

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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.