Home / 10,987.79-16,481.61-4,413.88

Finding the Fourth Proportional to 10,987.79, 16,481.61 and 4,413.88

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Solution

The fourth proportional to 10,987.79, 16,481.61 and 4,413.88 is: 6,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.79 : 16,481.61 = 4,413.88 : x
  2. Step 2: Convert to fraction form
    10,987.79/16,481.61 = 4,413.88/x
  3. Step 3: Cross multiply
    10,987.79x = 16,481.61 × 4,413.88
  4. Step 4: Simplify right side
    10,987.79x = 72,747,848.75
  5. Step 5: Solve for x
    x = 72,747,848.75/10,987.79
  6. Step 6: Final answer
    x = 6,620.79

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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.