Home / 15,745.35-21,730.12-11,759.55

Finding the Fourth Proportional to 15,745.35, 21,730.12 and 11,759.55

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Solution

The fourth proportional to 15,745.35, 21,730.12 and 11,759.55 is: 16,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.35 : 21,730.12 = 11,759.55 : x
  2. Step 2: Convert to fraction form
    15,745.35/21,730.12 = 11,759.55/x
  3. Step 3: Cross multiply
    15,745.35x = 21,730.12 × 11,759.55
  4. Step 4: Simplify right side
    15,745.35x = 255,536,353.39
  5. Step 5: Solve for x
    x = 255,536,353.39/15,745.35
  6. Step 6: Final answer
    x = 16,229.32

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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.