Home / 11,138.45-15,381.36-7,166.41

Finding the Fourth Proportional to 11,138.45, 15,381.36 and 7,166.41

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Solution

The fourth proportional to 11,138.45, 15,381.36 and 7,166.41 is: 9,896.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.45 : 15,381.36 = 7,166.41 : x
  2. Step 2: Convert to fraction form
    11,138.45/15,381.36 = 7,166.41/x
  3. Step 3: Cross multiply
    11,138.45x = 15,381.36 × 7,166.41
  4. Step 4: Simplify right side
    11,138.45x = 110,229,093.66
  5. Step 5: Solve for x
    x = 110,229,093.66/11,138.45
  6. Step 6: Final answer
    x = 9,896.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.