Home / 21,028.22-29,009.36-13,959.35

Finding the Fourth Proportional to 21,028.22, 29,009.36 and 13,959.35

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Solution

The fourth proportional to 21,028.22, 29,009.36 and 13,959.35 is: 19,257.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.22 : 29,009.36 = 13,959.35 : x
  2. Step 2: Convert to fraction form
    21,028.22/29,009.36 = 13,959.35/x
  3. Step 3: Cross multiply
    21,028.22x = 29,009.36 × 13,959.35
  4. Step 4: Simplify right side
    21,028.22x = 404,951,809.52
  5. Step 5: Solve for x
    x = 404,951,809.52/21,028.22
  6. Step 6: Final answer
    x = 19,257.54

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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.