Home / 20,408.37-28,161.99-11,454.15

Finding the Fourth Proportional to 20,408.37, 28,161.99 and 11,454.15

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Solution

The fourth proportional to 20,408.37, 28,161.99 and 11,454.15 is: 15,805.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.37 : 28,161.99 = 11,454.15 : x
  2. Step 2: Convert to fraction form
    20,408.37/28,161.99 = 11,454.15/x
  3. Step 3: Cross multiply
    20,408.37x = 28,161.99 × 11,454.15
  4. Step 4: Simplify right side
    20,408.37x = 322,571,516.95
  5. Step 5: Solve for x
    x = 322,571,516.95/20,408.37
  6. Step 6: Final answer
    x = 15,805.84

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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.