Home / 13,672.20-20,512.85-4,907.80

Finding the Fourth Proportional to 13,672.20, 20,512.85 and 4,907.80

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Solution

The fourth proportional to 13,672.20, 20,512.85 and 4,907.80 is: 7,363.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.20 : 20,512.85 = 4,907.80 : x
  2. Step 2: Convert to fraction form
    13,672.20/20,512.85 = 4,907.80/x
  3. Step 3: Cross multiply
    13,672.20x = 20,512.85 × 4,907.80
  4. Step 4: Simplify right side
    13,672.20x = 100,672,965.23
  5. Step 5: Solve for x
    x = 100,672,965.23/13,672.20
  6. Step 6: Final answer
    x = 7,363.33

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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.