Home / 30,413.61-45,589.91-12,620.07

Finding the Fourth Proportional to 30,413.61, 45,589.91 and 12,620.07

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Solution

The fourth proportional to 30,413.61, 45,589.91 and 12,620.07 is: 18,917.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,413.61 : 45,589.91 = 12,620.07 : x
  2. Step 2: Convert to fraction form
    30,413.61/45,589.91 = 12,620.07/x
  3. Step 3: Cross multiply
    30,413.61x = 45,589.91 × 12,620.07
  4. Step 4: Simplify right side
    30,413.61x = 575,347,792.39
  5. Step 5: Solve for x
    x = 575,347,792.39/30,413.61
  6. Step 6: Final answer
    x = 18,917.44

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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.