Home / 19,211.43-28,704.38-18,860.14

Finding the Fourth Proportional to 19,211.43, 28,704.38 and 18,860.14

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Solution

The fourth proportional to 19,211.43, 28,704.38 and 18,860.14 is: 28,179.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.43 : 28,704.38 = 18,860.14 : x
  2. Step 2: Convert to fraction form
    19,211.43/28,704.38 = 18,860.14/x
  3. Step 3: Cross multiply
    19,211.43x = 28,704.38 × 18,860.14
  4. Step 4: Simplify right side
    19,211.43x = 541,368,566.99
  5. Step 5: Solve for x
    x = 541,368,566.99/19,211.43
  6. Step 6: Final answer
    x = 28,179.51

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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.