Home / 15,745.67-21,730.56-11,759.86

Finding the Fourth Proportional to 15,745.67, 21,730.56 and 11,759.86

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Solution

The fourth proportional to 15,745.67, 21,730.56 and 11,759.86 is: 16,229.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.67 : 21,730.56 = 11,759.86 : x
  2. Step 2: Convert to fraction form
    15,745.67/21,730.56 = 11,759.86/x
  3. Step 3: Cross multiply
    15,745.67x = 21,730.56 × 11,759.86
  4. Step 4: Simplify right side
    15,745.67x = 255,548,326.39
  5. Step 5: Solve for x
    x = 255,548,326.39/15,745.67
  6. Step 6: Final answer
    x = 16,229.75

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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.