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Finding the Fourth Proportional to 18,603.92, 25,672.70 and 10,105.85

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Solution

The fourth proportional to 18,603.92, 25,672.70 and 10,105.85 is: 13,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.92 : 25,672.70 = 10,105.85 : x
  2. Step 2: Convert to fraction form
    18,603.92/25,672.70 = 10,105.85/x
  3. Step 3: Cross multiply
    18,603.92x = 25,672.70 × 10,105.85
  4. Step 4: Simplify right side
    18,603.92x = 259,444,544.74
  5. Step 5: Solve for x
    x = 259,444,544.74/18,603.92
  6. Step 6: Final answer
    x = 13,945.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.