Home / 12,982.11-19,489.91-11,145.03

Finding the Fourth Proportional to 12,982.11, 19,489.91 and 11,145.03

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Solution

The fourth proportional to 12,982.11, 19,489.91 and 11,145.03 is: 16,731.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982.11 : 19,489.91 = 11,145.03 : x
  2. Step 2: Convert to fraction form
    12,982.11/19,489.91 = 11,145.03/x
  3. Step 3: Cross multiply
    12,982.11x = 19,489.91 × 11,145.03
  4. Step 4: Simplify right side
    12,982.11x = 217,215,575.92
  5. Step 5: Solve for x
    x = 217,215,575.92/12,982.11
  6. Step 6: Final answer
    x = 16,731.92

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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.