Home / 21,026.89-31,512.31-9,936.52

Finding the Fourth Proportional to 21,026.89, 31,512.31 and 9,936.52

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Solution

The fourth proportional to 21,026.89, 31,512.31 and 9,936.52 is: 14,891.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.89 : 31,512.31 = 9,936.52 : x
  2. Step 2: Convert to fraction form
    21,026.89/31,512.31 = 9,936.52/x
  3. Step 3: Cross multiply
    21,026.89x = 31,512.31 × 9,936.52
  4. Step 4: Simplify right side
    21,026.89x = 313,122,698.56
  5. Step 5: Solve for x
    x = 313,122,698.56/21,026.89
  6. Step 6: Final answer
    x = 14,891.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.