Home / 11,728.15-16,185.03-6,422.87

Finding the Fourth Proportional to 11,728.15, 16,185.03 and 6,422.87

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Solution

The fourth proportional to 11,728.15, 16,185.03 and 6,422.87 is: 8,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.15 : 16,185.03 = 6,422.87 : x
  2. Step 2: Convert to fraction form
    11,728.15/16,185.03 = 6,422.87/x
  3. Step 3: Cross multiply
    11,728.15x = 16,185.03 × 6,422.87
  4. Step 4: Simplify right side
    11,728.15x = 103,954,343.64
  5. Step 5: Solve for x
    x = 103,954,343.64/11,728.15
  6. Step 6: Final answer
    x = 8,863.66

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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.