Home / 21,204.33-31,764.81-10,661.63

Finding the Fourth Proportional to 21,204.33, 31,764.81 and 10,661.63

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Solution

The fourth proportional to 21,204.33, 31,764.81 and 10,661.63 is: 15,971.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.33 : 31,764.81 = 10,661.63 : x
  2. Step 2: Convert to fraction form
    21,204.33/31,764.81 = 10,661.63/x
  3. Step 3: Cross multiply
    21,204.33x = 31,764.81 × 10,661.63
  4. Step 4: Simplify right side
    21,204.33x = 338,664,472.43
  5. Step 5: Solve for x
    x = 338,664,472.43/21,204.33
  6. Step 6: Final answer
    x = 15,971.48

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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.