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Finding the Fourth Proportional to 15,873.68, 21,906.78 and 8,800.76

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Solution

The fourth proportional to 15,873.68, 21,906.78 and 8,800.76 is: 12,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.68 : 21,906.78 = 8,800.76 : x
  2. Step 2: Convert to fraction form
    15,873.68/21,906.78 = 8,800.76/x
  3. Step 3: Cross multiply
    15,873.68x = 21,906.78 × 8,800.76
  4. Step 4: Simplify right side
    15,873.68x = 192,796,313.15
  5. Step 5: Solve for x
    x = 192,796,313.15/15,873.68
  6. Step 6: Final answer
    x = 12,145.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.