Home / 12,122.88-16,729.46-6,817.58

Finding the Fourth Proportional to 12,122.88, 16,729.46 and 6,817.58

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Solution

The fourth proportional to 12,122.88, 16,729.46 and 6,817.58 is: 9,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.88 : 16,729.46 = 6,817.58 : x
  2. Step 2: Convert to fraction form
    12,122.88/16,729.46 = 6,817.58/x
  3. Step 3: Cross multiply
    12,122.88x = 16,729.46 × 6,817.58
  4. Step 4: Simplify right side
    12,122.88x = 114,054,431.91
  5. Step 5: Solve for x
    x = 114,054,431.91/12,122.88
  6. Step 6: Final answer
    x = 9,408.20

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Half scale
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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.