Home / 11,856.21-17,784.33-3,091.15

Finding the Fourth Proportional to 11,856.21, 17,784.33 and 3,091.15

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Solution

The fourth proportional to 11,856.21, 17,784.33 and 3,091.15 is: 4,636.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.21 : 17,784.33 = 3,091.15 : x
  2. Step 2: Convert to fraction form
    11,856.21/17,784.33 = 3,091.15/x
  3. Step 3: Cross multiply
    11,856.21x = 17,784.33 × 3,091.15
  4. Step 4: Simplify right side
    11,856.21x = 54,974,031.68
  5. Step 5: Solve for x
    x = 54,974,031.68/11,856.21
  6. Step 6: Final answer
    x = 4,636.73

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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.