Home / 12,749.80-19,118.10-3,982.36

Finding the Fourth Proportional to 12,749.80, 19,118.10 and 3,982.36

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Solution

The fourth proportional to 12,749.80, 19,118.10 and 3,982.36 is: 5,971.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.80 : 19,118.10 = 3,982.36 : x
  2. Step 2: Convert to fraction form
    12,749.80/19,118.10 = 3,982.36/x
  3. Step 3: Cross multiply
    12,749.80x = 19,118.10 × 3,982.36
  4. Step 4: Simplify right side
    12,749.80x = 76,135,156.72
  5. Step 5: Solve for x
    x = 76,135,156.72/12,749.80
  6. Step 6: Final answer
    x = 5,971.48

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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.