Home / 17,979.57-26,969.36-11,391.89

Finding the Fourth Proportional to 17,979.57, 26,969.36 and 11,391.89

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Solution

The fourth proportional to 17,979.57, 26,969.36 and 11,391.89 is: 17,087.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,979.57 : 26,969.36 = 11,391.89 : x
  2. Step 2: Convert to fraction form
    17,979.57/26,969.36 = 11,391.89/x
  3. Step 3: Cross multiply
    17,979.57x = 26,969.36 × 11,391.89
  4. Step 4: Simplify right side
    17,979.57x = 307,231,942.39
  5. Step 5: Solve for x
    x = 307,231,942.39/17,979.57
  6. Step 6: Final answer
    x = 17,087.84

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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.