Home / 21,181.06-29,229.45-11,749.54

Finding the Fourth Proportional to 21,181.06, 29,229.45 and 11,749.54

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Solution

The fourth proportional to 21,181.06, 29,229.45 and 11,749.54 is: 16,214.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.06 : 29,229.45 = 11,749.54 : x
  2. Step 2: Convert to fraction form
    21,181.06/29,229.45 = 11,749.54/x
  3. Step 3: Cross multiply
    21,181.06x = 29,229.45 × 11,749.54
  4. Step 4: Simplify right side
    21,181.06x = 343,432,591.95
  5. Step 5: Solve for x
    x = 343,432,591.95/21,181.06
  6. Step 6: Final answer
    x = 16,214.14

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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.