Home / 11,015.20-16,525.68-3,620.80

Finding the Fourth Proportional to 11,015.20, 16,525.68 and 3,620.80

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Solution

The fourth proportional to 11,015.20, 16,525.68 and 3,620.80 is: 5,432.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,015.20 : 16,525.68 = 3,620.80 : x
  2. Step 2: Convert to fraction form
    11,015.20/16,525.68 = 3,620.80/x
  3. Step 3: Cross multiply
    11,015.20x = 16,525.68 × 3,620.80
  4. Step 4: Simplify right side
    11,015.20x = 59,836,182.14
  5. Step 5: Solve for x
    x = 59,836,182.14/11,015.20
  6. Step 6: Final answer
    x = 5,432.15

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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.