Home / 21,309.54-29,413.44-12,361.20

Finding the Fourth Proportional to 21,309.54, 29,413.44 and 12,361.20

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Solution

The fourth proportional to 21,309.54, 29,413.44 and 12,361.20 is: 17,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.54 : 29,413.44 = 12,361.20 : x
  2. Step 2: Convert to fraction form
    21,309.54/29,413.44 = 12,361.20/x
  3. Step 3: Cross multiply
    21,309.54x = 29,413.44 × 12,361.20
  4. Step 4: Simplify right side
    21,309.54x = 363,585,414.53
  5. Step 5: Solve for x
    x = 363,585,414.53/21,309.54
  6. Step 6: Final answer
    x = 17,062.10

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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.