Home / 10,982.80-16,479.60-4,409.20

Finding the Fourth Proportional to 10,982.80, 16,479.60 and 4,409.20

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Solution

The fourth proportional to 10,982.80, 16,479.60 and 4,409.20 is: 6,615.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,982.80 : 16,479.60 = 4,409.20 : x
  2. Step 2: Convert to fraction form
    10,982.80/16,479.60 = 4,409.20/x
  3. Step 3: Cross multiply
    10,982.80x = 16,479.60 × 4,409.20
  4. Step 4: Simplify right side
    10,982.80x = 72,661,852.32
  5. Step 5: Solve for x
    x = 72,661,852.32/10,982.80
  6. Step 6: Final answer
    x = 6,615.97

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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.