Home / 18,819.06-28,399.37-18,191.66

Finding the Fourth Proportional to 18,819.06, 28,399.37 and 18,191.66

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Solution

The fourth proportional to 18,819.06, 28,399.37 and 18,191.66 is: 27,452.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.06 : 28,399.37 = 18,191.66 : x
  2. Step 2: Convert to fraction form
    18,819.06/28,399.37 = 18,191.66/x
  3. Step 3: Cross multiply
    18,819.06x = 28,399.37 × 18,191.66
  4. Step 4: Simplify right side
    18,819.06x = 516,631,817.83
  5. Step 5: Solve for x
    x = 516,631,817.83/18,819.06
  6. Step 6: Final answer
    x = 27,452.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.