Home / 21,313.89-29,413.39-11,754.12

Finding the Fourth Proportional to 21,313.89, 29,413.39 and 11,754.12

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Solution

The fourth proportional to 21,313.89, 29,413.39 and 11,754.12 is: 16,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.89 : 29,413.39 = 11,754.12 : x
  2. Step 2: Convert to fraction form
    21,313.89/29,413.39 = 11,754.12/x
  3. Step 3: Cross multiply
    21,313.89x = 29,413.39 × 11,754.12
  4. Step 4: Simplify right side
    21,313.89x = 345,728,420.06
  5. Step 5: Solve for x
    x = 345,728,420.06/21,313.89
  6. Step 6: Final answer
    x = 16,220.80

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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.