Home / 20,163.78-30,243.36-5,372.34

Finding the Fourth Proportional to 20,163.78, 30,243.36 and 5,372.34

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Solution

The fourth proportional to 20,163.78, 30,243.36 and 5,372.34 is: 8,057.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.78 : 30,243.36 = 5,372.34 : x
  2. Step 2: Convert to fraction form
    20,163.78/30,243.36 = 5,372.34/x
  3. Step 3: Cross multiply
    20,163.78x = 30,243.36 × 5,372.34
  4. Step 4: Simplify right side
    20,163.78x = 162,477,612.66
  5. Step 5: Solve for x
    x = 162,477,612.66/20,163.78
  6. Step 6: Final answer
    x = 8,057.89

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1.5x scale

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.