Home / 21,213.21-29,273.42-11,782.38

Finding the Fourth Proportional to 21,213.21, 29,273.42 and 11,782.38

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Solution

The fourth proportional to 21,213.21, 29,273.42 and 11,782.38 is: 16,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.21 : 29,273.42 = 11,782.38 : x
  2. Step 2: Convert to fraction form
    21,213.21/29,273.42 = 11,782.38/x
  3. Step 3: Cross multiply
    21,213.21x = 29,273.42 × 11,782.38
  4. Step 4: Simplify right side
    21,213.21x = 344,910,466.63
  5. Step 5: Solve for x
    x = 344,910,466.63/21,213.21
  6. Step 6: Final answer
    x = 16,259.23

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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.