Home / 12,227.25-18,284.81-9,109.38

Finding the Fourth Proportional to 12,227.25, 18,284.81 and 9,109.38

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Solution

The fourth proportional to 12,227.25, 18,284.81 and 9,109.38 is: 13,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,227.25 : 18,284.81 = 9,109.38 : x
  2. Step 2: Convert to fraction form
    12,227.25/18,284.81 = 9,109.38/x
  3. Step 3: Cross multiply
    12,227.25x = 18,284.81 × 9,109.38
  4. Step 4: Simplify right side
    12,227.25x = 166,563,236.97
  5. Step 5: Solve for x
    x = 166,563,236.97/12,227.25
  6. Step 6: Final answer
    x = 13,622.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.