Home / 20,161.44-30,089.70-19,636.56

Finding the Fourth Proportional to 20,161.44, 30,089.70 and 19,636.56

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Solution

The fourth proportional to 20,161.44, 30,089.70 and 19,636.56 is: 29,306.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.44 : 30,089.70 = 19,636.56 : x
  2. Step 2: Convert to fraction form
    20,161.44/30,089.70 = 19,636.56/x
  3. Step 3: Cross multiply
    20,161.44x = 30,089.70 × 19,636.56
  4. Step 4: Simplify right side
    20,161.44x = 590,858,199.43
  5. Step 5: Solve for x
    x = 590,858,199.43/20,161.44
  6. Step 6: Final answer
    x = 29,306.35

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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.