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Finding the Fourth Proportional to 28,543.92, 42,819.92 and 8,824.20

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Solution

The fourth proportional to 28,543.92, 42,819.92 and 8,824.20 is: 13,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.92 : 42,819.92 = 8,824.20 : x
  2. Step 2: Convert to fraction form
    28,543.92/42,819.92 = 8,824.20/x
  3. Step 3: Cross multiply
    28,543.92x = 42,819.92 × 8,824.20
  4. Step 4: Simplify right side
    28,543.92x = 377,851,538.06
  5. Step 5: Solve for x
    x = 377,851,538.06/28,543.92
  6. Step 6: Final answer
    x = 13,237.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.