Home / 21,922.54-30,245.94-13,415.80

Finding the Fourth Proportional to 21,922.54, 30,245.94 and 13,415.80

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Solution

The fourth proportional to 21,922.54, 30,245.94 and 13,415.80 is: 18,509.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922.54 : 30,245.94 = 13,415.80 : x
  2. Step 2: Convert to fraction form
    21,922.54/30,245.94 = 13,415.80/x
  3. Step 3: Cross multiply
    21,922.54x = 30,245.94 × 13,415.80
  4. Step 4: Simplify right side
    21,922.54x = 405,773,481.85
  5. Step 5: Solve for x
    x = 405,773,481.85/21,922.54
  6. Step 6: Final answer
    x = 18,509.42

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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.