Home / 20,176.72-30,112.44-19,651.84

Finding the Fourth Proportional to 20,176.72, 30,112.44 and 19,651.84

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Solution

The fourth proportional to 20,176.72, 30,112.44 and 19,651.84 is: 29,329.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,176.72 : 30,112.44 = 19,651.84 : x
  2. Step 2: Convert to fraction form
    20,176.72/30,112.44 = 19,651.84/x
  3. Step 3: Cross multiply
    20,176.72x = 30,112.44 × 19,651.84
  4. Step 4: Simplify right side
    20,176.72x = 591,764,852.89
  5. Step 5: Solve for x
    x = 591,764,852.89/20,176.72
  6. Step 6: Final answer
    x = 29,329.09

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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.