Home / 11,212.56-16,818.21-3,420.75

Finding the Fourth Proportional to 11,212.56, 16,818.21 and 3,420.75

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Solution

The fourth proportional to 11,212.56, 16,818.21 and 3,420.75 is: 5,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.56 : 16,818.21 = 3,420.75 : x
  2. Step 2: Convert to fraction form
    11,212.56/16,818.21 = 3,420.75/x
  3. Step 3: Cross multiply
    11,212.56x = 16,818.21 × 3,420.75
  4. Step 4: Simplify right side
    11,212.56x = 57,530,891.86
  5. Step 5: Solve for x
    x = 57,530,891.86/11,212.56
  6. Step 6: Final answer
    x = 5,130.93

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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.