Home / 21,201.75-29,259.33-11,770.31

Finding the Fourth Proportional to 21,201.75, 29,259.33 and 11,770.31

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Solution

The fourth proportional to 21,201.75, 29,259.33 and 11,770.31 is: 16,243.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.75 : 29,259.33 = 11,770.31 : x
  2. Step 2: Convert to fraction form
    21,201.75/29,259.33 = 11,770.31/x
  3. Step 3: Cross multiply
    21,201.75x = 29,259.33 × 11,770.31
  4. Step 4: Simplify right side
    21,201.75x = 344,391,413.50
  5. Step 5: Solve for x
    x = 344,391,413.50/21,201.75
  6. Step 6: Final answer
    x = 16,243.54

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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.