Home / 10,105.80-15,161.14-3,180.30

Finding the Fourth Proportional to 10,105.80, 15,161.14 and 3,180.30

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Solution

The fourth proportional to 10,105.80, 15,161.14 and 3,180.30 is: 4,771.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,105.80 : 15,161.14 = 3,180.30 : x
  2. Step 2: Convert to fraction form
    10,105.80/15,161.14 = 3,180.30/x
  3. Step 3: Cross multiply
    10,105.80x = 15,161.14 × 3,180.30
  4. Step 4: Simplify right side
    10,105.80x = 48,216,973.54
  5. Step 5: Solve for x
    x = 48,216,973.54/10,105.80
  6. Step 6: Final answer
    x = 4,771.22

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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.