Home / 21,181.14-29,229.99-11,749.70

Finding the Fourth Proportional to 21,181.14, 29,229.99 and 11,749.70

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Solution

The fourth proportional to 21,181.14, 29,229.99 and 11,749.70 is: 16,214.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.14 : 29,229.99 = 11,749.70 : x
  2. Step 2: Convert to fraction form
    21,181.14/29,229.99 = 11,749.70/x
  3. Step 3: Cross multiply
    21,181.14x = 29,229.99 × 11,749.70
  4. Step 4: Simplify right side
    21,181.14x = 343,443,467.35
  5. Step 5: Solve for x
    x = 343,443,467.35/21,181.14
  6. Step 6: Final answer
    x = 16,214.59

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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.