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Finding the Fourth Proportional to 18,200.88, 25,115.16 and 10,242.90

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Solution

The fourth proportional to 18,200.88, 25,115.16 and 10,242.90 is: 14,134.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,200.88 : 25,115.16 = 10,242.90 : x
  2. Step 2: Convert to fraction form
    18,200.88/25,115.16 = 10,242.90/x
  3. Step 3: Cross multiply
    18,200.88x = 25,115.16 × 10,242.90
  4. Step 4: Simplify right side
    18,200.88x = 257,252,072.36
  5. Step 5: Solve for x
    x = 257,252,072.36/18,200.88
  6. Step 6: Final answer
    x = 14,134.05

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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.