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Finding the Fourth Proportional to 18,403.66, 25,400.36 and 10,849.54

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Solution

The fourth proportional to 18,403.66, 25,400.36 and 10,849.54 is: 14,974.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.66 : 25,400.36 = 10,849.54 : x
  2. Step 2: Convert to fraction form
    18,403.66/25,400.36 = 10,849.54/x
  3. Step 3: Cross multiply
    18,403.66x = 25,400.36 × 10,849.54
  4. Step 4: Simplify right side
    18,403.66x = 275,582,221.83
  5. Step 5: Solve for x
    x = 275,582,221.83/18,403.66
  6. Step 6: Final answer
    x = 14,974.32

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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.