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Finding the Fourth Proportional to 11,745.38, 16,209.38 and 7,759.51

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Solution

The fourth proportional to 11,745.38, 16,209.38 and 7,759.51 is: 10,708.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.38 : 16,209.38 = 7,759.51 : x
  2. Step 2: Convert to fraction form
    11,745.38/16,209.38 = 7,759.51/x
  3. Step 3: Cross multiply
    11,745.38x = 16,209.38 × 7,759.51
  4. Step 4: Simplify right side
    11,745.38x = 125,776,846.20
  5. Step 5: Solve for x
    x = 125,776,846.20/11,745.38
  6. Step 6: Final answer
    x = 10,708.62

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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.