Home / 11,078.80-16,618.20-4,152.40

Finding the Fourth Proportional to 11,078.80, 16,618.20 and 4,152.40

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Solution

The fourth proportional to 11,078.80, 16,618.20 and 4,152.40 is: 6,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.80 : 16,618.20 = 4,152.40 : x
  2. Step 2: Convert to fraction form
    11,078.80/16,618.20 = 4,152.40/x
  3. Step 3: Cross multiply
    11,078.80x = 16,618.20 × 4,152.40
  4. Step 4: Simplify right side
    11,078.80x = 69,005,413.68
  5. Step 5: Solve for x
    x = 69,005,413.68/11,078.80
  6. Step 6: Final answer
    x = 6,228.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.