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Finding the Fourth Proportional to 11,977.68, 17,955.48 and 10,993.68

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Solution

The fourth proportional to 11,977.68, 17,955.48 and 10,993.68 is: 16,480.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,977.68 : 17,955.48 = 10,993.68 : x
  2. Step 2: Convert to fraction form
    11,977.68/17,955.48 = 10,993.68/x
  3. Step 3: Cross multiply
    11,977.68x = 17,955.48 × 10,993.68
  4. Step 4: Simplify right side
    11,977.68x = 197,396,801.37
  5. Step 5: Solve for x
    x = 197,396,801.37/11,977.68
  6. Step 6: Final answer
    x = 16,480.39

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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.