Home / 20,997.26-28,975.82-11,565.62

Finding the Fourth Proportional to 20,997.26, 28,975.82 and 11,565.62

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Solution

The fourth proportional to 20,997.26, 28,975.82 and 11,565.62 is: 15,960.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.26 : 28,975.82 = 11,565.62 : x
  2. Step 2: Convert to fraction form
    20,997.26/28,975.82 = 11,565.62/x
  3. Step 3: Cross multiply
    20,997.26x = 28,975.82 × 11,565.62
  4. Step 4: Simplify right side
    20,997.26x = 335,123,323.31
  5. Step 5: Solve for x
    x = 335,123,323.31/20,997.26
  6. Step 6: Final answer
    x = 15,960.34

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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.