Home / 11,431.68-15,776.80-7,183.44

Finding the Fourth Proportional to 11,431.68, 15,776.80 and 7,183.44

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Solution

The fourth proportional to 11,431.68, 15,776.80 and 7,183.44 is: 9,913.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.68 : 15,776.80 = 7,183.44 : x
  2. Step 2: Convert to fraction form
    11,431.68/15,776.80 = 7,183.44/x
  3. Step 3: Cross multiply
    11,431.68x = 15,776.80 × 7,183.44
  4. Step 4: Simplify right side
    11,431.68x = 113,331,696.19
  5. Step 5: Solve for x
    x = 113,331,696.19/11,431.68
  6. Step 6: Final answer
    x = 9,913.83

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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.