Home / 20,114.10-30,149.55-7,629.30

Finding the Fourth Proportional to 20,114.10, 30,149.55 and 7,629.30

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Solution

The fourth proportional to 20,114.10, 30,149.55 and 7,629.30 is: 11,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.10 : 30,149.55 = 7,629.30 : x
  2. Step 2: Convert to fraction form
    20,114.10/30,149.55 = 7,629.30/x
  3. Step 3: Cross multiply
    20,114.10x = 30,149.55 × 7,629.30
  4. Step 4: Simplify right side
    20,114.10x = 230,019,961.82
  5. Step 5: Solve for x
    x = 230,019,961.82/20,114.10
  6. Step 6: Final answer
    x = 11,435.76

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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.