Home / 27,181.12-40,771.72-21,891.36

Finding the Fourth Proportional to 27,181.12, 40,771.72 and 21,891.36

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Solution

The fourth proportional to 27,181.12, 40,771.72 and 21,891.36 is: 32,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,181.12 : 40,771.72 = 21,891.36 : x
  2. Step 2: Convert to fraction form
    27,181.12/40,771.72 = 21,891.36/x
  3. Step 3: Cross multiply
    27,181.12x = 40,771.72 × 21,891.36
  4. Step 4: Simplify right side
    27,181.12x = 892,548,400.34
  5. Step 5: Solve for x
    x = 892,548,400.34/27,181.12
  6. Step 6: Final answer
    x = 32,837.07

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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.