Home / 21,122.65-31,596.45-19,198.09

Finding the Fourth Proportional to 21,122.65, 31,596.45 and 19,198.09

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Solution

The fourth proportional to 21,122.65, 31,596.45 and 19,198.09 is: 28,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.65 : 31,596.45 = 19,198.09 : x
  2. Step 2: Convert to fraction form
    21,122.65/31,596.45 = 19,198.09/x
  3. Step 3: Cross multiply
    21,122.65x = 31,596.45 × 19,198.09
  4. Step 4: Simplify right side
    21,122.65x = 606,591,490.78
  5. Step 5: Solve for x
    x = 606,591,490.78/21,122.65
  6. Step 6: Final answer
    x = 28,717.58

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1.5x scale

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.