Home / 11,405.70-17,108.37-9,453.78

Finding the Fourth Proportional to 11,405.70, 17,108.37 and 9,453.78

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Solution

The fourth proportional to 11,405.70, 17,108.37 and 9,453.78 is: 14,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.70 : 17,108.37 = 9,453.78 : x
  2. Step 2: Convert to fraction form
    11,405.70/17,108.37 = 9,453.78/x
  3. Step 3: Cross multiply
    11,405.70x = 17,108.37 × 9,453.78
  4. Step 4: Simplify right side
    11,405.70x = 161,738,766.14
  5. Step 5: Solve for x
    x = 161,738,766.14/11,405.70
  6. Step 6: Final answer
    x = 14,180.52

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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.