Home / 18,933.08-28,399.62-11,993

Finding the Fourth Proportional to 18,933.08, 28,399.62 and 11,993

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Solution

The fourth proportional to 18,933.08, 28,399.62 and 11,993 is: 17,989.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.08 : 28,399.62 = 11,993 : x
  2. Step 2: Convert to fraction form
    18,933.08/28,399.62 = 11,993/x
  3. Step 3: Cross multiply
    18,933.08x = 28,399.62 × 11,993
  4. Step 4: Simplify right side
    18,933.08x = 340,596,642.66
  5. Step 5: Solve for x
    x = 340,596,642.66/18,933.08
  6. Step 6: Final answer
    x = 17,989.50

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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.