Home / 11,183.08-15,433.08-6,403.78

Finding the Fourth Proportional to 11,183.08, 15,433.08 and 6,403.78

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Solution

The fourth proportional to 11,183.08, 15,433.08 and 6,403.78 is: 8,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,183.08 : 15,433.08 = 6,403.78 : x
  2. Step 2: Convert to fraction form
    11,183.08/15,433.08 = 6,403.78/x
  3. Step 3: Cross multiply
    11,183.08x = 15,433.08 × 6,403.78
  4. Step 4: Simplify right side
    11,183.08x = 98,830,049.04
  5. Step 5: Solve for x
    x = 98,830,049.04/11,183.08
  6. Step 6: Final answer
    x = 8,837.46

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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.