Home / 20,272.10-30,408.15-13,273.70

Finding the Fourth Proportional to 20,272.10, 30,408.15 and 13,273.70

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Solution

The fourth proportional to 20,272.10, 30,408.15 and 13,273.70 is: 19,910.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.10 : 30,408.15 = 13,273.70 : x
  2. Step 2: Convert to fraction form
    20,272.10/30,408.15 = 13,273.70/x
  3. Step 3: Cross multiply
    20,272.10x = 30,408.15 × 13,273.70
  4. Step 4: Simplify right side
    20,272.10x = 403,628,660.66
  5. Step 5: Solve for x
    x = 403,628,660.66/20,272.10
  6. Step 6: Final answer
    x = 19,910.55

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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.