Home / 12,400.12-18,600.33-3,635.21

Finding the Fourth Proportional to 12,400.12, 18,600.33 and 3,635.21

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Solution

The fourth proportional to 12,400.12, 18,600.33 and 3,635.21 is: 5,452.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.12 : 18,600.33 = 3,635.21 : x
  2. Step 2: Convert to fraction form
    12,400.12/18,600.33 = 3,635.21/x
  3. Step 3: Cross multiply
    12,400.12x = 18,600.33 × 3,635.21
  4. Step 4: Simplify right side
    12,400.12x = 67,615,994.44
  5. Step 5: Solve for x
    x = 67,615,994.44/12,400.12
  6. Step 6: Final answer
    x = 5,452.85

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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.