Home / 13,742.88-20,620.80-4,975.44

Finding the Fourth Proportional to 13,742.88, 20,620.80 and 4,975.44

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Solution

The fourth proportional to 13,742.88, 20,620.80 and 4,975.44 is: 7,465.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.88 : 20,620.80 = 4,975.44 : x
  2. Step 2: Convert to fraction form
    13,742.88/20,620.80 = 4,975.44/x
  3. Step 3: Cross multiply
    13,742.88x = 20,620.80 × 4,975.44
  4. Step 4: Simplify right side
    13,742.88x = 102,597,553.15
  5. Step 5: Solve for x
    x = 102,597,553.15/13,742.88
  6. Step 6: Final answer
    x = 7,465.51

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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.