Home / 21,922.48-30,245.88-13,415.73

Finding the Fourth Proportional to 21,922.48, 30,245.88 and 13,415.73

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Solution

The fourth proportional to 21,922.48, 30,245.88 and 13,415.73 is: 18,509.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922.48 : 30,245.88 = 13,415.73 : x
  2. Step 2: Convert to fraction form
    21,922.48/30,245.88 = 13,415.73/x
  3. Step 3: Cross multiply
    21,922.48x = 30,245.88 × 13,415.73
  4. Step 4: Simplify right side
    21,922.48x = 405,770,559.69
  5. Step 5: Solve for x
    x = 405,770,559.69/21,922.48
  6. Step 6: Final answer
    x = 18,509.34

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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.