Home / 13,419.83-20,112.43-5,512.83

Finding the Fourth Proportional to 13,419.83, 20,112.43 and 5,512.83

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Solution

The fourth proportional to 13,419.83, 20,112.43 and 5,512.83 is: 8,262.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.83 : 20,112.43 = 5,512.83 : x
  2. Step 2: Convert to fraction form
    13,419.83/20,112.43 = 5,512.83/x
  3. Step 3: Cross multiply
    13,419.83x = 20,112.43 × 5,512.83
  4. Step 4: Simplify right side
    13,419.83x = 110,876,482.80
  5. Step 5: Solve for x
    x = 110,876,482.80/13,419.83
  6. Step 6: Final answer
    x = 8,262.14

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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.