Home / 11,212.42-16,820.26-3,420.22

Finding the Fourth Proportional to 11,212.42, 16,820.26 and 3,420.22

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Solution

The fourth proportional to 11,212.42, 16,820.26 and 3,420.22 is: 5,130.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.42 : 16,820.26 = 3,420.22 : x
  2. Step 2: Convert to fraction form
    11,212.42/16,820.26 = 3,420.22/x
  3. Step 3: Cross multiply
    11,212.42x = 16,820.26 × 3,420.22
  4. Step 4: Simplify right side
    11,212.42x = 57,528,989.66
  5. Step 5: Solve for x
    x = 57,528,989.66/11,212.42
  6. Step 6: Final answer
    x = 5,130.83

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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.