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Finding the Fourth Proportional to 28,543.33, 42,819.09 and 8,823.42

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Solution

The fourth proportional to 28,543.33, 42,819.09 and 8,823.42 is: 13,236.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.33 : 42,819.09 = 8,823.42 : x
  2. Step 2: Convert to fraction form
    28,543.33/42,819.09 = 8,823.42/x
  3. Step 3: Cross multiply
    28,543.33x = 42,819.09 × 8,823.42
  4. Step 4: Simplify right side
    28,543.33x = 377,810,815.09
  5. Step 5: Solve for x
    x = 377,810,815.09/28,543.33
  6. Step 6: Final answer
    x = 13,236.40

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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.