Home / 21,107.17-31,676.31-10,013.89

Finding the Fourth Proportional to 21,107.17, 31,676.31 and 10,013.89

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Solution

The fourth proportional to 21,107.17, 31,676.31 and 10,013.89 is: 15,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.17 : 31,676.31 = 10,013.89 : x
  2. Step 2: Convert to fraction form
    21,107.17/31,676.31 = 10,013.89/x
  3. Step 3: Cross multiply
    21,107.17x = 31,676.31 × 10,013.89
  4. Step 4: Simplify right side
    21,107.17x = 317,203,083.95
  5. Step 5: Solve for x
    x = 317,203,083.95/21,107.17
  6. Step 6: Final answer
    x = 15,028.21

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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.