Home / 11,719.08-16,172.66-6,413.78

Finding the Fourth Proportional to 11,719.08, 16,172.66 and 6,413.78

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Solution

The fourth proportional to 11,719.08, 16,172.66 and 6,413.78 is: 8,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.08 : 16,172.66 = 6,413.78 : x
  2. Step 2: Convert to fraction form
    11,719.08/16,172.66 = 6,413.78/x
  3. Step 3: Cross multiply
    11,719.08x = 16,172.66 × 6,413.78
  4. Step 4: Simplify right side
    11,719.08x = 103,727,939.72
  5. Step 5: Solve for x
    x = 103,727,939.72/11,719.08
  6. Step 6: Final answer
    x = 8,851.20

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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.