Home / 15,183.09-20,955.38-8,813.70

Finding the Fourth Proportional to 15,183.09, 20,955.38 and 8,813.70

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Solution

The fourth proportional to 15,183.09, 20,955.38 and 8,813.70 is: 12,164.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,183.09 : 20,955.38 = 8,813.70 : x
  2. Step 2: Convert to fraction form
    15,183.09/20,955.38 = 8,813.70/x
  3. Step 3: Cross multiply
    15,183.09x = 20,955.38 × 8,813.70
  4. Step 4: Simplify right side
    15,183.09x = 184,694,388.64
  5. Step 5: Solve for x
    x = 184,694,388.64/15,183.09
  6. Step 6: Final answer
    x = 12,164.48

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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.