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Finding the Fourth Proportional to 18,999.46, 28,511.43 and 10,240.48

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Solution

The fourth proportional to 18,999.46, 28,511.43 and 10,240.48 is: 15,367.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.46 : 28,511.43 = 10,240.48 : x
  2. Step 2: Convert to fraction form
    18,999.46/28,511.43 = 10,240.48/x
  3. Step 3: Cross multiply
    18,999.46x = 28,511.43 × 10,240.48
  4. Step 4: Simplify right side
    18,999.46x = 291,970,728.69
  5. Step 5: Solve for x
    x = 291,970,728.69/18,999.46
  6. Step 6: Final answer
    x = 15,367.32

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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.