Home / 11,313.20-16,980.60-5,772.80

Finding the Fourth Proportional to 11,313.20, 16,980.60 and 5,772.80

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Solution

The fourth proportional to 11,313.20, 16,980.60 and 5,772.80 is: 8,664.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,313.20 : 16,980.60 = 5,772.80 : x
  2. Step 2: Convert to fraction form
    11,313.20/16,980.60 = 5,772.80/x
  3. Step 3: Cross multiply
    11,313.20x = 16,980.60 × 5,772.80
  4. Step 4: Simplify right side
    11,313.20x = 98,025,607.68
  5. Step 5: Solve for x
    x = 98,025,607.68/11,313.20
  6. Step 6: Final answer
    x = 8,664.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.