Home / 18,770.45-28,147.37-5,620.37

Finding the Fourth Proportional to 18,770.45, 28,147.37 and 5,620.37

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Solution

The fourth proportional to 18,770.45, 28,147.37 and 5,620.37 is: 8,428.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.45 : 28,147.37 = 5,620.37 : x
  2. Step 2: Convert to fraction form
    18,770.45/28,147.37 = 5,620.37/x
  3. Step 3: Cross multiply
    18,770.45x = 28,147.37 × 5,620.37
  4. Step 4: Simplify right side
    18,770.45x = 158,198,633.93
  5. Step 5: Solve for x
    x = 158,198,633.93/18,770.45
  6. Step 6: Final answer
    x = 8,428.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.