Home / 19,729.23-27,208.26-15,422.88

Finding the Fourth Proportional to 19,729.23, 27,208.26 and 15,422.88

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Solution

The fourth proportional to 19,729.23, 27,208.26 and 15,422.88 is: 21,269.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,729.23 : 27,208.26 = 15,422.88 : x
  2. Step 2: Convert to fraction form
    19,729.23/27,208.26 = 15,422.88/x
  3. Step 3: Cross multiply
    19,729.23x = 27,208.26 × 15,422.88
  4. Step 4: Simplify right side
    19,729.23x = 419,629,728.99
  5. Step 5: Solve for x
    x = 419,629,728.99/19,729.23
  6. Step 6: Final answer
    x = 21,269.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.