Home / 13,396.74-20,072.44-8,115.73

Finding the Fourth Proportional to 13,396.74, 20,072.44 and 8,115.73

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Solution

The fourth proportional to 13,396.74, 20,072.44 and 8,115.73 is: 12,159.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.74 : 20,072.44 = 8,115.73 : x
  2. Step 2: Convert to fraction form
    13,396.74/20,072.44 = 8,115.73/x
  3. Step 3: Cross multiply
    13,396.74x = 20,072.44 × 8,115.73
  4. Step 4: Simplify right side
    13,396.74x = 162,902,503.48
  5. Step 5: Solve for x
    x = 162,902,503.48/13,396.74
  6. Step 6: Final answer
    x = 12,159.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.