Home / 11,145.24-16,728.30-7,450.20

Finding the Fourth Proportional to 11,145.24, 16,728.30 and 7,450.20

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Solution

The fourth proportional to 11,145.24, 16,728.30 and 7,450.20 is: 11,182.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.24 : 16,728.30 = 7,450.20 : x
  2. Step 2: Convert to fraction form
    11,145.24/16,728.30 = 7,450.20/x
  3. Step 3: Cross multiply
    11,145.24x = 16,728.30 × 7,450.20
  4. Step 4: Simplify right side
    11,145.24x = 124,629,180.66
  5. Step 5: Solve for x
    x = 124,629,180.66/11,145.24
  6. Step 6: Final answer
    x = 11,182.28

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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.