Home / 11,212.76-16,820.99-3,419.75

Finding the Fourth Proportional to 11,212.76, 16,820.99 and 3,419.75

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Solution

The fourth proportional to 11,212.76, 16,820.99 and 3,419.75 is: 5,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.76 : 16,820.99 = 3,419.75 : x
  2. Step 2: Convert to fraction form
    11,212.76/16,820.99 = 3,419.75/x
  3. Step 3: Cross multiply
    11,212.76x = 16,820.99 × 3,419.75
  4. Step 4: Simplify right side
    11,212.76x = 57,523,580.55
  5. Step 5: Solve for x
    x = 57,523,580.55/11,212.76
  6. Step 6: Final answer
    x = 5,130.19

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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.