Home / 20,163.66-30,050.13-19,113.90

Finding the Fourth Proportional to 20,163.66, 30,050.13 and 19,113.90

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Solution

The fourth proportional to 20,163.66, 30,050.13 and 19,113.90 is: 28,485.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.66 : 30,050.13 = 19,113.90 : x
  2. Step 2: Convert to fraction form
    20,163.66/30,050.13 = 19,113.90/x
  3. Step 3: Cross multiply
    20,163.66x = 30,050.13 × 19,113.90
  4. Step 4: Simplify right side
    20,163.66x = 574,375,138.80
  5. Step 5: Solve for x
    x = 574,375,138.80/20,163.66
  6. Step 6: Final answer
    x = 28,485.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.