Home / 21,181.84-31,722.66-18,393.37

Finding the Fourth Proportional to 21,181.84, 31,722.66 and 18,393.37

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Solution

The fourth proportional to 21,181.84, 31,722.66 and 18,393.37 is: 27,546.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.84 : 31,722.66 = 18,393.37 : x
  2. Step 2: Convert to fraction form
    21,181.84/31,722.66 = 18,393.37/x
  3. Step 3: Cross multiply
    21,181.84x = 31,722.66 × 18,393.37
  4. Step 4: Simplify right side
    21,181.84x = 583,486,550.58
  5. Step 5: Solve for x
    x = 583,486,550.58/21,181.84
  6. Step 6: Final answer
    x = 27,546.54

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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.