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Finding the Fourth Proportional to 18,229.64, 27,324.96 and 13,019.72

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Solution

The fourth proportional to 18,229.64, 27,324.96 and 13,019.72 is: 19,515.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,229.64 : 27,324.96 = 13,019.72 : x
  2. Step 2: Convert to fraction form
    18,229.64/27,324.96 = 13,019.72/x
  3. Step 3: Cross multiply
    18,229.64x = 27,324.96 × 13,019.72
  4. Step 4: Simplify right side
    18,229.64x = 355,763,328.21
  5. Step 5: Solve for x
    x = 355,763,328.21/18,229.64
  6. Step 6: Final answer
    x = 19,515.65

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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.