Home / 12,189.62-18,290.48-5,620.43

Finding the Fourth Proportional to 12,189.62, 18,290.48 and 5,620.43

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Solution

The fourth proportional to 12,189.62, 18,290.48 and 5,620.43 is: 8,433.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.62 : 18,290.48 = 5,620.43 : x
  2. Step 2: Convert to fraction form
    12,189.62/18,290.48 = 5,620.43/x
  3. Step 3: Cross multiply
    12,189.62x = 18,290.48 × 5,620.43
  4. Step 4: Simplify right side
    12,189.62x = 102,800,242.95
  5. Step 5: Solve for x
    x = 102,800,242.95/12,189.62
  6. Step 6: Final answer
    x = 8,433.43

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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.