Home / 17,991.20-27,022.37-10,889.79

Finding the Fourth Proportional to 17,991.20, 27,022.37 and 10,889.79

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Solution

The fourth proportional to 17,991.20, 27,022.37 and 10,889.79 is: 16,356.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.20 : 27,022.37 = 10,889.79 : x
  2. Step 2: Convert to fraction form
    17,991.20/27,022.37 = 10,889.79/x
  3. Step 3: Cross multiply
    17,991.20x = 27,022.37 × 10,889.79
  4. Step 4: Simplify right side
    17,991.20x = 294,267,880.15
  5. Step 5: Solve for x
    x = 294,267,880.15/17,991.20
  6. Step 6: Final answer
    x = 16,356.22

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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.