Home / 39,621.21-54,677.31-21,716.31

Finding the Fourth Proportional to 39,621.21, 54,677.31 and 21,716.31

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Solution

The fourth proportional to 39,621.21, 54,677.31 and 21,716.31 is: 29,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,621.21 : 54,677.31 = 21,716.31 : x
  2. Step 2: Convert to fraction form
    39,621.21/54,677.31 = 21,716.31/x
  3. Step 3: Cross multiply
    39,621.21x = 54,677.31 × 21,716.31
  4. Step 4: Simplify right side
    39,621.21x = 1,187,389,413.93
  5. Step 5: Solve for x
    x = 1,187,389,413.93/39,621.21
  6. Step 6: Final answer
    x = 29,968.53

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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.