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Finding the Fourth Proportional to 18,828, 28,205.24 and 8,953.68

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Solution

The fourth proportional to 18,828, 28,205.24 and 8,953.68 is: 13,413.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828 : 28,205.24 = 8,953.68 : x
  2. Step 2: Convert to fraction form
    18,828/28,205.24 = 8,953.68/x
  3. Step 3: Cross multiply
    18,828x = 28,205.24 × 8,953.68
  4. Step 4: Simplify right side
    18,828x = 252,540,693.28
  5. Step 5: Solve for x
    x = 252,540,693.28/18,828
  6. Step 6: Final answer
    x = 13,413.04

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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.