Home / 11,015.20-15,183.48-8,653.28

Finding the Fourth Proportional to 11,015.20, 15,183.48 and 8,653.28

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Solution

The fourth proportional to 11,015.20, 15,183.48 and 8,653.28 is: 11,927.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,015.20 : 15,183.48 = 8,653.28 : x
  2. Step 2: Convert to fraction form
    11,015.20/15,183.48 = 8,653.28/x
  3. Step 3: Cross multiply
    11,015.20x = 15,183.48 × 8,653.28
  4. Step 4: Simplify right side
    11,015.20x = 131,386,903.81
  5. Step 5: Solve for x
    x = 131,386,903.81/11,015.20
  6. Step 6: Final answer
    x = 11,927.78

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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.