Home / 11,405.57-17,108.82-3,914.28

Finding the Fourth Proportional to 11,405.57, 17,108.82 and 3,914.28

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Solution

The fourth proportional to 11,405.57, 17,108.82 and 3,914.28 is: 5,871.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.57 : 17,108.82 = 3,914.28 : x
  2. Step 2: Convert to fraction form
    11,405.57/17,108.82 = 3,914.28/x
  3. Step 3: Cross multiply
    11,405.57x = 17,108.82 × 3,914.28
  4. Step 4: Simplify right side
    11,405.57x = 66,968,711.95
  5. Step 5: Solve for x
    x = 66,968,711.95/11,405.57
  6. Step 6: Final answer
    x = 5,871.58

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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.