Home / 12,286.44-16,955.76-6,982.20

Finding the Fourth Proportional to 12,286.44, 16,955.76 and 6,982.20

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Solution

The fourth proportional to 12,286.44, 16,955.76 and 6,982.20 is: 9,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.44 : 16,955.76 = 6,982.20 : x
  2. Step 2: Convert to fraction form
    12,286.44/16,955.76 = 6,982.20/x
  3. Step 3: Cross multiply
    12,286.44x = 16,955.76 × 6,982.20
  4. Step 4: Simplify right side
    12,286.44x = 118,388,507.47
  5. Step 5: Solve for x
    x = 118,388,507.47/12,286.44
  6. Step 6: Final answer
    x = 9,635.70

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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.