Home / 18,786.51-25,927.41-11,980.75

Finding the Fourth Proportional to 18,786.51, 25,927.41 and 11,980.75

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Solution

The fourth proportional to 18,786.51, 25,927.41 and 11,980.75 is: 16,534.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.51 : 25,927.41 = 11,980.75 : x
  2. Step 2: Convert to fraction form
    18,786.51/25,927.41 = 11,980.75/x
  3. Step 3: Cross multiply
    18,786.51x = 25,927.41 × 11,980.75
  4. Step 4: Simplify right side
    18,786.51x = 310,629,787.41
  5. Step 5: Solve for x
    x = 310,629,787.41/18,786.51
  6. Step 6: Final answer
    x = 16,534.73

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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.