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Finding the Fourth Proportional to 11,220.40, 16,816.20 and 6,833.20

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Solution

The fourth proportional to 11,220.40, 16,816.20 and 6,833.20 is: 10,241.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.40 : 16,816.20 = 6,833.20 : x
  2. Step 2: Convert to fraction form
    11,220.40/16,816.20 = 6,833.20/x
  3. Step 3: Cross multiply
    11,220.40x = 16,816.20 × 6,833.20
  4. Step 4: Simplify right side
    11,220.40x = 114,908,457.84
  5. Step 5: Solve for x
    x = 114,908,457.84/11,220.40
  6. Step 6: Final answer
    x = 10,241.03

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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.