Home / 13,775.72-20,665.04-4,413.48

Finding the Fourth Proportional to 13,775.72, 20,665.04 and 4,413.48

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Solution

The fourth proportional to 13,775.72, 20,665.04 and 4,413.48 is: 6,620.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.72 : 20,665.04 = 4,413.48 : x
  2. Step 2: Convert to fraction form
    13,775.72/20,665.04 = 4,413.48/x
  3. Step 3: Cross multiply
    13,775.72x = 20,665.04 × 4,413.48
  4. Step 4: Simplify right side
    13,775.72x = 91,204,740.74
  5. Step 5: Solve for x
    x = 91,204,740.74/13,775.72
  6. Step 6: Final answer
    x = 6,620.69

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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.