Home / 11,718.99-16,172.18-6,413.80

Finding the Fourth Proportional to 11,718.99, 16,172.18 and 6,413.80

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Solution

The fourth proportional to 11,718.99, 16,172.18 and 6,413.80 is: 8,851.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.99 : 16,172.18 = 6,413.80 : x
  2. Step 2: Convert to fraction form
    11,718.99/16,172.18 = 6,413.80/x
  3. Step 3: Cross multiply
    11,718.99x = 16,172.18 × 6,413.80
  4. Step 4: Simplify right side
    11,718.99x = 103,725,128.08
  5. Step 5: Solve for x
    x = 103,725,128.08/11,718.99
  6. Step 6: Final answer
    x = 8,851.03

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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.