Home / 20,142.36-30,213.99-5,352.77

Finding the Fourth Proportional to 20,142.36, 30,213.99 and 5,352.77

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Solution

The fourth proportional to 20,142.36, 30,213.99 and 5,352.77 is: 8,029.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.36 : 30,213.99 = 5,352.77 : x
  2. Step 2: Convert to fraction form
    20,142.36/30,213.99 = 5,352.77/x
  3. Step 3: Cross multiply
    20,142.36x = 30,213.99 × 5,352.77
  4. Step 4: Simplify right side
    20,142.36x = 161,728,539.25
  5. Step 5: Solve for x
    x = 161,728,539.25/20,142.36
  6. Step 6: Final answer
    x = 8,029.27

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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.