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Finding the Fourth Proportional to 18,144.26, 27,221.43 and 10,358.54

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Solution

The fourth proportional to 18,144.26, 27,221.43 and 10,358.54 is: 15,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,144.26 : 27,221.43 = 10,358.54 : x
  2. Step 2: Convert to fraction form
    18,144.26/27,221.43 = 10,358.54/x
  3. Step 3: Cross multiply
    18,144.26x = 27,221.43 × 10,358.54
  4. Step 4: Simplify right side
    18,144.26x = 281,974,271.51
  5. Step 5: Solve for x
    x = 281,974,271.51/18,144.26
  6. Step 6: Final answer
    x = 15,540.69

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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.