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Finding the Fourth Proportional to 18,203.61, 25,121.04 and 10,245.96

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Solution

The fourth proportional to 18,203.61, 25,121.04 and 10,245.96 is: 14,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.61 : 25,121.04 = 10,245.96 : x
  2. Step 2: Convert to fraction form
    18,203.61/25,121.04 = 10,245.96/x
  3. Step 3: Cross multiply
    18,203.61x = 25,121.04 × 10,245.96
  4. Step 4: Simplify right side
    18,203.61x = 257,389,171.00
  5. Step 5: Solve for x
    x = 257,389,171.00/18,203.61
  6. Step 6: Final answer
    x = 14,139.46

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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.