Home / 20,418.75-30,625.33-5,625.54

Finding the Fourth Proportional to 20,418.75, 30,625.33 and 5,625.54

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Solution

The fourth proportional to 20,418.75, 30,625.33 and 5,625.54 is: 8,437.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.75 : 30,625.33 = 5,625.54 : x
  2. Step 2: Convert to fraction form
    20,418.75/30,625.33 = 5,625.54/x
  3. Step 3: Cross multiply
    20,418.75x = 30,625.33 × 5,625.54
  4. Step 4: Simplify right side
    20,418.75x = 172,284,018.93
  5. Step 5: Solve for x
    x = 172,284,018.93/20,418.75
  6. Step 6: Final answer
    x = 8,437.54

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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.