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Finding the Fourth Proportional to 18,290.89, 27,441.87 and 12,964.37

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Solution

The fourth proportional to 18,290.89, 27,441.87 and 12,964.37 is: 19,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,290.89 : 27,441.87 = 12,964.37 : x
  2. Step 2: Convert to fraction form
    18,290.89/27,441.87 = 12,964.37/x
  3. Step 3: Cross multiply
    18,290.89x = 27,441.87 × 12,964.37
  4. Step 4: Simplify right side
    18,290.89x = 355,766,556.17
  5. Step 5: Solve for x
    x = 355,766,556.17/18,290.89
  6. Step 6: Final answer
    x = 19,450.48

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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.