Home / 10,218.74-15,331.20-3,645.44

Finding the Fourth Proportional to 10,218.74, 15,331.20 and 3,645.44

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Solution

The fourth proportional to 10,218.74, 15,331.20 and 3,645.44 is: 5,469.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.74 : 15,331.20 = 3,645.44 : x
  2. Step 2: Convert to fraction form
    10,218.74/15,331.20 = 3,645.44/x
  3. Step 3: Cross multiply
    10,218.74x = 15,331.20 × 3,645.44
  4. Step 4: Simplify right side
    10,218.74x = 55,888,874.84
  5. Step 5: Solve for x
    x = 55,888,874.84/10,218.74
  6. Step 6: Final answer
    x = 5,469.25

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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.