Home / 10,811.36-16,219.80-3,020.20

Finding the Fourth Proportional to 10,811.36, 16,219.80 and 3,020.20

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Solution

The fourth proportional to 10,811.36, 16,219.80 and 3,020.20 is: 4,531.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,811.36 : 16,219.80 = 3,020.20 : x
  2. Step 2: Convert to fraction form
    10,811.36/16,219.80 = 3,020.20/x
  3. Step 3: Cross multiply
    10,811.36x = 16,219.80 × 3,020.20
  4. Step 4: Simplify right side
    10,811.36x = 48,987,039.96
  5. Step 5: Solve for x
    x = 48,987,039.96/10,811.36
  6. Step 6: Final answer
    x = 4,531.07

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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.