Home / 20,104.25-27,739.85-12,146.49

Finding the Fourth Proportional to 20,104.25, 27,739.85 and 12,146.49

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Solution

The fourth proportional to 20,104.25, 27,739.85 and 12,146.49 is: 16,759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.25 : 27,739.85 = 12,146.49 : x
  2. Step 2: Convert to fraction form
    20,104.25/27,739.85 = 12,146.49/x
  3. Step 3: Cross multiply
    20,104.25x = 27,739.85 × 12,146.49
  4. Step 4: Simplify right side
    20,104.25x = 336,941,749.89
  5. Step 5: Solve for x
    x = 336,941,749.89/20,104.25
  6. Step 6: Final answer
    x = 16,759.73

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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.