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Finding the Fourth Proportional to 17,971.79, 26,969.93 and 9,212.85

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Solution

The fourth proportional to 17,971.79, 26,969.93 and 9,212.85 is: 13,825.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,971.79 : 26,969.93 = 9,212.85 : x
  2. Step 2: Convert to fraction form
    17,971.79/26,969.93 = 9,212.85/x
  3. Step 3: Cross multiply
    17,971.79x = 26,969.93 × 9,212.85
  4. Step 4: Simplify right side
    17,971.79x = 248,469,873.54
  5. Step 5: Solve for x
    x = 248,469,873.54/17,971.79
  6. Step 6: Final answer
    x = 13,825.55

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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.