Home / 11,419.30-17,120.66-7,712.34

Finding the Fourth Proportional to 11,419.30, 17,120.66 and 7,712.34

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Solution

The fourth proportional to 11,419.30, 17,120.66 and 7,712.34 is: 11,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.30 : 17,120.66 = 7,712.34 : x
  2. Step 2: Convert to fraction form
    11,419.30/17,120.66 = 7,712.34/x
  3. Step 3: Cross multiply
    11,419.30x = 17,120.66 × 7,712.34
  4. Step 4: Simplify right side
    11,419.30x = 132,040,350.94
  5. Step 5: Solve for x
    x = 132,040,350.94/11,419.30
  6. Step 6: Final answer
    x = 11,562.91

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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.