Home / 11,220.09-16,832.55-3,428.70

Finding the Fourth Proportional to 11,220.09, 16,832.55 and 3,428.70

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Solution

The fourth proportional to 11,220.09, 16,832.55 and 3,428.70 is: 5,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.09 : 16,832.55 = 3,428.70 : x
  2. Step 2: Convert to fraction form
    11,220.09/16,832.55 = 3,428.70/x
  3. Step 3: Cross multiply
    11,220.09x = 16,832.55 × 3,428.70
  4. Step 4: Simplify right side
    11,220.09x = 57,713,764.19
  5. Step 5: Solve for x
    x = 57,713,764.19/11,220.09
  6. Step 6: Final answer
    x = 5,143.79

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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.