Home / 11,718.40-16,170.88-6,413.32

Finding the Fourth Proportional to 11,718.40, 16,170.88 and 6,413.32

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Solution

The fourth proportional to 11,718.40, 16,170.88 and 6,413.32 is: 8,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.40 : 16,170.88 = 6,413.32 : x
  2. Step 2: Convert to fraction form
    11,718.40/16,170.88 = 6,413.32/x
  3. Step 3: Cross multiply
    11,718.40x = 16,170.88 × 6,413.32
  4. Step 4: Simplify right side
    11,718.40x = 103,709,028.12
  5. Step 5: Solve for x
    x = 103,709,028.12/11,718.40
  6. Step 6: Final answer
    x = 8,850.10

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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.