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Finding the Fourth Proportional to 18,226.40, 25,152.16 and 10,268.80

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Solution

The fourth proportional to 18,226.40, 25,152.16 and 10,268.80 is: 14,170.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,226.40 : 25,152.16 = 10,268.80 : x
  2. Step 2: Convert to fraction form
    18,226.40/25,152.16 = 10,268.80/x
  3. Step 3: Cross multiply
    18,226.40x = 25,152.16 × 10,268.80
  4. Step 4: Simplify right side
    18,226.40x = 258,282,500.61
  5. Step 5: Solve for x
    x = 258,282,500.61/18,226.40
  6. Step 6: Final answer
    x = 14,170.79

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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.