Home / 12,939.15-19,396.85-4,169.55

Finding the Fourth Proportional to 12,939.15, 19,396.85 and 4,169.55

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Solution

The fourth proportional to 12,939.15, 19,396.85 and 4,169.55 is: 6,250.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.15 : 19,396.85 = 4,169.55 : x
  2. Step 2: Convert to fraction form
    12,939.15/19,396.85 = 4,169.55/x
  3. Step 3: Cross multiply
    12,939.15x = 19,396.85 × 4,169.55
  4. Step 4: Simplify right side
    12,939.15x = 80,876,115.07
  5. Step 5: Solve for x
    x = 80,876,115.07/12,939.15
  6. Step 6: Final answer
    x = 6,250.50

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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.