Home / 20,161.12-30,241.64-5,370.04

Finding the Fourth Proportional to 20,161.12, 30,241.64 and 5,370.04

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Solution

The fourth proportional to 20,161.12, 30,241.64 and 5,370.04 is: 8,055.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.12 : 30,241.64 = 5,370.04 : x
  2. Step 2: Convert to fraction form
    20,161.12/30,241.64 = 5,370.04/x
  3. Step 3: Cross multiply
    20,161.12x = 30,241.64 × 5,370.04
  4. Step 4: Simplify right side
    20,161.12x = 162,398,816.47
  5. Step 5: Solve for x
    x = 162,398,816.47/20,161.12
  6. Step 6: Final answer
    x = 8,055.05

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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.