Home / 15,778.20-21,773.82-8,704.56

Finding the Fourth Proportional to 15,778.20, 21,773.82 and 8,704.56

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Solution

The fourth proportional to 15,778.20, 21,773.82 and 8,704.56 is: 12,012.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.20 : 21,773.82 = 8,704.56 : x
  2. Step 2: Convert to fraction form
    15,778.20/21,773.82 = 8,704.56/x
  3. Step 3: Cross multiply
    15,778.20x = 21,773.82 × 8,704.56
  4. Step 4: Simplify right side
    15,778.20x = 189,531,522.62
  5. Step 5: Solve for x
    x = 189,531,522.62/15,778.20
  6. Step 6: Final answer
    x = 12,012.24

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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.