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Finding the Fourth Proportional to 18,749.85, 25,874.55 and 10,251.87

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Solution

The fourth proportional to 18,749.85, 25,874.55 and 10,251.87 is: 14,147.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.85 : 25,874.55 = 10,251.87 : x
  2. Step 2: Convert to fraction form
    18,749.85/25,874.55 = 10,251.87/x
  3. Step 3: Cross multiply
    18,749.85x = 25,874.55 × 10,251.87
  4. Step 4: Simplify right side
    18,749.85x = 265,262,522.91
  5. Step 5: Solve for x
    x = 265,262,522.91/18,749.85
  6. Step 6: Final answer
    x = 14,147.45

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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.