Home / 21,083.49-31,621.58-7,935.96

Finding the Fourth Proportional to 21,083.49, 31,621.58 and 7,935.96

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Solution

The fourth proportional to 21,083.49, 31,621.58 and 7,935.96 is: 11,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.49 : 31,621.58 = 7,935.96 : x
  2. Step 2: Convert to fraction form
    21,083.49/31,621.58 = 7,935.96/x
  3. Step 3: Cross multiply
    21,083.49x = 31,621.58 × 7,935.96
  4. Step 4: Simplify right side
    21,083.49x = 250,947,554.34
  5. Step 5: Solve for x
    x = 250,947,554.34/21,083.49
  6. Step 6: Final answer
    x = 11,902.56

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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.