Home / 12,629.15-18,949.18-6,778.92

Finding the Fourth Proportional to 12,629.15, 18,949.18 and 6,778.92

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Solution

The fourth proportional to 12,629.15, 18,949.18 and 6,778.92 is: 10,171.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.15 : 18,949.18 = 6,778.92 : x
  2. Step 2: Convert to fraction form
    12,629.15/18,949.18 = 6,778.92/x
  3. Step 3: Cross multiply
    12,629.15x = 18,949.18 × 6,778.92
  4. Step 4: Simplify right side
    12,629.15x = 128,454,975.29
  5. Step 5: Solve for x
    x = 128,454,975.29/12,629.15
  6. Step 6: Final answer
    x = 10,171.31

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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.