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Finding the Fourth Proportional to 19,481.99, 26,867.50 and 12,765.20

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Solution

The fourth proportional to 19,481.99, 26,867.50 and 12,765.20 is: 17,604.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,481.99 : 26,867.50 = 12,765.20 : x
  2. Step 2: Convert to fraction form
    19,481.99/26,867.50 = 12,765.20/x
  3. Step 3: Cross multiply
    19,481.99x = 26,867.50 × 12,765.20
  4. Step 4: Simplify right side
    19,481.99x = 342,968,844.75
  5. Step 5: Solve for x
    x = 342,968,844.75/19,481.99
  6. Step 6: Final answer
    x = 17,604.41

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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.