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Finding the Fourth Proportional to 18,768.98, 25,900.33 and 10,812.35

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Solution

The fourth proportional to 18,768.98, 25,900.33 and 10,812.35 is: 14,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.98 : 25,900.33 = 10,812.35 : x
  2. Step 2: Convert to fraction form
    18,768.98/25,900.33 = 10,812.35/x
  3. Step 3: Cross multiply
    18,768.98x = 25,900.33 × 10,812.35
  4. Step 4: Simplify right side
    18,768.98x = 280,043,433.08
  5. Step 5: Solve for x
    x = 280,043,433.08/18,768.98
  6. Step 6: Final answer
    x = 14,920.55

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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.