Home / 20,415.75-30,620.83-5,622.54

Finding the Fourth Proportional to 20,415.75, 30,620.83 and 5,622.54

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Solution

The fourth proportional to 20,415.75, 30,620.83 and 5,622.54 is: 8,433.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.75 : 30,620.83 = 5,622.54 : x
  2. Step 2: Convert to fraction form
    20,415.75/30,620.83 = 5,622.54/x
  3. Step 3: Cross multiply
    20,415.75x = 30,620.83 × 5,622.54
  4. Step 4: Simplify right side
    20,415.75x = 172,166,841.51
  5. Step 5: Solve for x
    x = 172,166,841.51/20,415.75
  6. Step 6: Final answer
    x = 8,433.04

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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.