Home / 11,313.81-16,976.37-5,078.28

Finding the Fourth Proportional to 11,313.81, 16,976.37 and 5,078.28

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Solution

The fourth proportional to 11,313.81, 16,976.37 and 5,078.28 is: 7,619.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,313.81 : 16,976.37 = 5,078.28 : x
  2. Step 2: Convert to fraction form
    11,313.81/16,976.37 = 5,078.28/x
  3. Step 3: Cross multiply
    11,313.81x = 16,976.37 × 5,078.28
  4. Step 4: Simplify right side
    11,313.81x = 86,210,760.24
  5. Step 5: Solve for x
    x = 86,210,760.24/11,313.81
  6. Step 6: Final answer
    x = 7,619.96

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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.