Home / 11,969.36-18,043.68-11,166.55

Finding the Fourth Proportional to 11,969.36, 18,043.68 and 11,166.55

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Solution

The fourth proportional to 11,969.36, 18,043.68 and 11,166.55 is: 16,833.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.36 : 18,043.68 = 11,166.55 : x
  2. Step 2: Convert to fraction form
    11,969.36/18,043.68 = 11,166.55/x
  3. Step 3: Cross multiply
    11,969.36x = 18,043.68 × 11,166.55
  4. Step 4: Simplify right side
    11,969.36x = 201,485,635.58
  5. Step 5: Solve for x
    x = 201,485,635.58/11,969.36
  6. Step 6: Final answer
    x = 16,833.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.