Home / 21,172.05-31,743.09-10,634.49

Finding the Fourth Proportional to 21,172.05, 31,743.09 and 10,634.49

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Solution

The fourth proportional to 21,172.05, 31,743.09 and 10,634.49 is: 15,944.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.05 : 31,743.09 = 10,634.49 : x
  2. Step 2: Convert to fraction form
    21,172.05/31,743.09 = 10,634.49/x
  3. Step 3: Cross multiply
    21,172.05x = 31,743.09 × 10,634.49
  4. Step 4: Simplify right side
    21,172.05x = 337,571,573.17
  5. Step 5: Solve for x
    x = 337,571,573.17/21,172.05
  6. Step 6: Final answer
    x = 15,944.21

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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.