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Finding the Fourth Proportional to 19,729.41, 27,225.89 and 11,230.89

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Solution

The fourth proportional to 19,729.41, 27,225.89 and 11,230.89 is: 15,498.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,729.41 : 27,225.89 = 11,230.89 : x
  2. Step 2: Convert to fraction form
    19,729.41/27,225.89 = 11,230.89/x
  3. Step 3: Cross multiply
    19,729.41x = 27,225.89 × 11,230.89
  4. Step 4: Simplify right side
    19,729.41x = 305,770,919.59
  5. Step 5: Solve for x
    x = 305,770,919.59/19,729.41
  6. Step 6: Final answer
    x = 15,498.23

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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.