Home / 16,821.89-23,223.83-11,164.31

Finding the Fourth Proportional to 16,821.89, 23,223.83 and 11,164.31

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Solution

The fourth proportional to 16,821.89, 23,223.83 and 11,164.31 is: 15,413.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.89 : 23,223.83 = 11,164.31 : x
  2. Step 2: Convert to fraction form
    16,821.89/23,223.83 = 11,164.31/x
  3. Step 3: Cross multiply
    16,821.89x = 23,223.83 × 11,164.31
  4. Step 4: Simplify right side
    16,821.89x = 259,277,865.57
  5. Step 5: Solve for x
    x = 259,277,865.57/16,821.89
  6. Step 6: Final answer
    x = 15,413.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.