Home / 13,705.81-20,556.46-4,819.05

Finding the Fourth Proportional to 13,705.81, 20,556.46 and 4,819.05

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Solution

The fourth proportional to 13,705.81, 20,556.46 and 4,819.05 is: 7,227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.81 : 20,556.46 = 4,819.05 : x
  2. Step 2: Convert to fraction form
    13,705.81/20,556.46 = 4,819.05/x
  3. Step 3: Cross multiply
    13,705.81x = 20,556.46 × 4,819.05
  4. Step 4: Simplify right side
    13,705.81x = 99,062,620.12
  5. Step 5: Solve for x
    x = 99,062,620.12/13,705.81
  6. Step 6: Final answer
    x = 7,227.78

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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.