Home / 20,732.82-28,611.53-11,780.56

Finding the Fourth Proportional to 20,732.82, 28,611.53 and 11,780.56

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Solution

The fourth proportional to 20,732.82, 28,611.53 and 11,780.56 is: 16,257.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.82 : 28,611.53 = 11,780.56 : x
  2. Step 2: Convert to fraction form
    20,732.82/28,611.53 = 11,780.56/x
  3. Step 3: Cross multiply
    20,732.82x = 28,611.53 × 11,780.56
  4. Step 4: Simplify right side
    20,732.82x = 337,059,845.86
  5. Step 5: Solve for x
    x = 337,059,845.86/20,732.82
  6. Step 6: Final answer
    x = 16,257.31

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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.