Home / 22,121.78-33,012.79-19,757.09

Finding the Fourth Proportional to 22,121.78, 33,012.79 and 19,757.09

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Solution

The fourth proportional to 22,121.78, 33,012.79 and 19,757.09 is: 29,483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,121.78 : 33,012.79 = 19,757.09 : x
  2. Step 2: Convert to fraction form
    22,121.78/33,012.79 = 19,757.09/x
  3. Step 3: Cross multiply
    22,121.78x = 33,012.79 × 19,757.09
  4. Step 4: Simplify right side
    22,121.78x = 652,236,663.18
  5. Step 5: Solve for x
    x = 652,236,663.18/22,121.78
  6. Step 6: Final answer
    x = 29,483.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.