Home / 19,121.88-26,397.79-11,955.78

Finding the Fourth Proportional to 19,121.88, 26,397.79 and 11,955.78

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Solution

The fourth proportional to 19,121.88, 26,397.79 and 11,955.78 is: 16,504.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.88 : 26,397.79 = 11,955.78 : x
  2. Step 2: Convert to fraction form
    19,121.88/26,397.79 = 11,955.78/x
  3. Step 3: Cross multiply
    19,121.88x = 26,397.79 × 11,955.78
  4. Step 4: Simplify right side
    19,121.88x = 315,606,169.73
  5. Step 5: Solve for x
    x = 315,606,169.73/19,121.88
  6. Step 6: Final answer
    x = 16,504.98

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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.