Home / 12,429.99-18,645.84-4,115.86

Finding the Fourth Proportional to 12,429.99, 18,645.84 and 4,115.86

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Solution

The fourth proportional to 12,429.99, 18,645.84 and 4,115.86 is: 6,174.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.99 : 18,645.84 = 4,115.86 : x
  2. Step 2: Convert to fraction form
    12,429.99/18,645.84 = 4,115.86/x
  3. Step 3: Cross multiply
    12,429.99x = 18,645.84 × 4,115.86
  4. Step 4: Simplify right side
    12,429.99x = 76,743,620.41
  5. Step 5: Solve for x
    x = 76,743,620.41/12,429.99
  6. Step 6: Final answer
    x = 6,174.07

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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.