Home / 19,913.21-27,479.09-11,413.53

Finding the Fourth Proportional to 19,913.21, 27,479.09 and 11,413.53

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Solution

The fourth proportional to 19,913.21, 27,479.09 and 11,413.53 is: 15,750.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.21 : 27,479.09 = 11,413.53 : x
  2. Step 2: Convert to fraction form
    19,913.21/27,479.09 = 11,413.53/x
  3. Step 3: Cross multiply
    19,913.21x = 27,479.09 × 11,413.53
  4. Step 4: Simplify right side
    19,913.21x = 313,633,361.02
  5. Step 5: Solve for x
    x = 313,633,361.02/19,913.21
  6. Step 6: Final answer
    x = 15,750.02

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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.