Home / 20,132.53-27,778.42-12,174.59

Finding the Fourth Proportional to 20,132.53, 27,778.42 and 12,174.59

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Solution

The fourth proportional to 20,132.53, 27,778.42 and 12,174.59 is: 16,798.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.53 : 27,778.42 = 12,174.59 : x
  2. Step 2: Convert to fraction form
    20,132.53/27,778.42 = 12,174.59/x
  3. Step 3: Cross multiply
    20,132.53x = 27,778.42 × 12,174.59
  4. Step 4: Simplify right side
    20,132.53x = 338,190,705.02
  5. Step 5: Solve for x
    x = 338,190,705.02/20,132.53
  6. Step 6: Final answer
    x = 16,798.22

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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.