Home / 12,982.14-19,480.50-5,191.56

Finding the Fourth Proportional to 12,982.14, 19,480.50 and 5,191.56

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Solution

The fourth proportional to 12,982.14, 19,480.50 and 5,191.56 is: 7,790.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982.14 : 19,480.50 = 5,191.56 : x
  2. Step 2: Convert to fraction form
    12,982.14/19,480.50 = 5,191.56/x
  3. Step 3: Cross multiply
    12,982.14x = 19,480.50 × 5,191.56
  4. Step 4: Simplify right side
    12,982.14x = 101,134,184.58
  5. Step 5: Solve for x
    x = 101,134,184.58/12,982.14
  6. Step 6: Final answer
    x = 7,790.26

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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.