Home / 12,170.48-18,255.84-3,850.34

Finding the Fourth Proportional to 12,170.48, 18,255.84 and 3,850.34

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Solution

The fourth proportional to 12,170.48, 18,255.84 and 3,850.34 is: 5,775.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.48 : 18,255.84 = 3,850.34 : x
  2. Step 2: Convert to fraction form
    12,170.48/18,255.84 = 3,850.34/x
  3. Step 3: Cross multiply
    12,170.48x = 18,255.84 × 3,850.34
  4. Step 4: Simplify right side
    12,170.48x = 70,291,190.99
  5. Step 5: Solve for x
    x = 70,291,190.99/12,170.48
  6. Step 6: Final answer
    x = 5,775.55

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1.5x scale

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.