Home / 21,312.44-29,413.15-11,880.80

Finding the Fourth Proportional to 21,312.44, 29,413.15 and 11,880.80

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Solution

The fourth proportional to 21,312.44, 29,413.15 and 11,880.80 is: 16,396.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.44 : 29,413.15 = 11,880.80 : x
  2. Step 2: Convert to fraction form
    21,312.44/29,413.15 = 11,880.80/x
  3. Step 3: Cross multiply
    21,312.44x = 29,413.15 × 11,880.80
  4. Step 4: Simplify right side
    21,312.44x = 349,451,575.75
  5. Step 5: Solve for x
    x = 349,451,575.75/21,312.44
  6. Step 6: Final answer
    x = 16,396.60

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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.