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Finding the Fourth Proportional to 18,711, 28,051.60 and 10,804.56

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Solution

The fourth proportional to 18,711, 28,051.60 and 10,804.56 is: 16,198.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711 : 28,051.60 = 10,804.56 : x
  2. Step 2: Convert to fraction form
    18,711/28,051.60 = 10,804.56/x
  3. Step 3: Cross multiply
    18,711x = 28,051.60 × 10,804.56
  4. Step 4: Simplify right side
    18,711x = 303,085,083.35
  5. Step 5: Solve for x
    x = 303,085,083.35/18,711
  6. Step 6: Final answer
    x = 16,198.23

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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.