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Finding the Fourth Proportional to 18,600.40, 25,672.97 and 10,647.21

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Solution

The fourth proportional to 18,600.40, 25,672.97 and 10,647.21 is: 14,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.40 : 25,672.97 = 10,647.21 : x
  2. Step 2: Convert to fraction form
    18,600.40/25,672.97 = 10,647.21/x
  3. Step 3: Cross multiply
    18,600.40x = 25,672.97 × 10,647.21
  4. Step 4: Simplify right side
    18,600.40x = 273,345,502.91
  5. Step 5: Solve for x
    x = 273,345,502.91/18,600.40
  6. Step 6: Final answer
    x = 14,695.68

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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.