Home / 21,107.22-29,129.31-14,028.90

Finding the Fourth Proportional to 21,107.22, 29,129.31 and 14,028.90

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Solution

The fourth proportional to 21,107.22, 29,129.31 and 14,028.90 is: 19,360.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.22 : 29,129.31 = 14,028.90 : x
  2. Step 2: Convert to fraction form
    21,107.22/29,129.31 = 14,028.90/x
  3. Step 3: Cross multiply
    21,107.22x = 29,129.31 × 14,028.90
  4. Step 4: Simplify right side
    21,107.22x = 408,652,177.06
  5. Step 5: Solve for x
    x = 408,652,177.06/21,107.22
  6. Step 6: Final answer
    x = 19,360.78

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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.