Home / 31,851.90-43,949.22-18,418.26

Finding the Fourth Proportional to 31,851.90, 43,949.22 and 18,418.26

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Solution

The fourth proportional to 31,851.90, 43,949.22 and 18,418.26 is: 25,413.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,851.90 : 43,949.22 = 18,418.26 : x
  2. Step 2: Convert to fraction form
    31,851.90/43,949.22 = 18,418.26/x
  3. Step 3: Cross multiply
    31,851.90x = 43,949.22 × 18,418.26
  4. Step 4: Simplify right side
    31,851.90x = 809,468,160.76
  5. Step 5: Solve for x
    x = 809,468,160.76/31,851.90
  6. Step 6: Final answer
    x = 25,413.50

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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.