Home / 11,745.39-16,209-6,440.58

Finding the Fourth Proportional to 11,745.39, 16,209 and 6,440.58

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Solution

The fourth proportional to 11,745.39, 16,209 and 6,440.58 is: 8,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.39 : 16,209 = 6,440.58 : x
  2. Step 2: Convert to fraction form
    11,745.39/16,209 = 6,440.58/x
  3. Step 3: Cross multiply
    11,745.39x = 16,209 × 6,440.58
  4. Step 4: Simplify right side
    11,745.39x = 104,395,361.22
  5. Step 5: Solve for x
    x = 104,395,361.22/11,745.39
  6. Step 6: Final answer
    x = 8,888.20

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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.