Home / 20,051.90-27,667.42-15,270.88

Finding the Fourth Proportional to 20,051.90, 27,667.42 and 15,270.88

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Solution

The fourth proportional to 20,051.90, 27,667.42 and 15,270.88 is: 21,070.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,051.90 : 27,667.42 = 15,270.88 : x
  2. Step 2: Convert to fraction form
    20,051.90/27,667.42 = 15,270.88/x
  3. Step 3: Cross multiply
    20,051.90x = 27,667.42 × 15,270.88
  4. Step 4: Simplify right side
    20,051.90x = 422,505,850.73
  5. Step 5: Solve for x
    x = 422,505,850.73/20,051.90
  6. Step 6: Final answer
    x = 21,070.61

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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.