Home / 21,319.31-29,419.01-11,759.55

Finding the Fourth Proportional to 21,319.31, 29,419.01 and 11,759.55

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Solution

The fourth proportional to 21,319.31, 29,419.01 and 11,759.55 is: 16,227.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.31 : 29,419.01 = 11,759.55 : x
  2. Step 2: Convert to fraction form
    21,319.31/29,419.01 = 11,759.55/x
  3. Step 3: Cross multiply
    21,319.31x = 29,419.01 × 11,759.55
  4. Step 4: Simplify right side
    21,319.31x = 345,954,348.44
  5. Step 5: Solve for x
    x = 345,954,348.44/21,319.31
  6. Step 6: Final answer
    x = 16,227.28

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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.