Home / 12,982.05-19,478.20-6,745.98

Finding the Fourth Proportional to 12,982.05, 19,478.20 and 6,745.98

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Solution

The fourth proportional to 12,982.05, 19,478.20 and 6,745.98 is: 10,121.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982.05 : 19,478.20 = 6,745.98 : x
  2. Step 2: Convert to fraction form
    12,982.05/19,478.20 = 6,745.98/x
  3. Step 3: Cross multiply
    12,982.05x = 19,478.20 × 6,745.98
  4. Step 4: Simplify right side
    12,982.05x = 131,399,597.49
  5. Step 5: Solve for x
    x = 131,399,597.49/12,982.05
  6. Step 6: Final answer
    x = 10,121.64

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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.