Home / 10,656.72-15,982.80-4,080.60

Finding the Fourth Proportional to 10,656.72, 15,982.80 and 4,080.60

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Solution

The fourth proportional to 10,656.72, 15,982.80 and 4,080.60 is: 6,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.72 : 15,982.80 = 4,080.60 : x
  2. Step 2: Convert to fraction form
    10,656.72/15,982.80 = 4,080.60/x
  3. Step 3: Cross multiply
    10,656.72x = 15,982.80 × 4,080.60
  4. Step 4: Simplify right side
    10,656.72x = 65,219,413.68
  5. Step 5: Solve for x
    x = 65,219,413.68/10,656.72
  6. Step 6: Final answer
    x = 6,120.03

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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.