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Finding the Fourth Proportional to 19,993.39, 27,589.71 and 11,040.67

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Solution

The fourth proportional to 19,993.39, 27,589.71 and 11,040.67 is: 15,235.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.39 : 27,589.71 = 11,040.67 : x
  2. Step 2: Convert to fraction form
    19,993.39/27,589.71 = 11,040.67/x
  3. Step 3: Cross multiply
    19,993.39x = 27,589.71 × 11,040.67
  4. Step 4: Simplify right side
    19,993.39x = 304,608,883.51
  5. Step 5: Solve for x
    x = 304,608,883.51/19,993.39
  6. Step 6: Final answer
    x = 15,235.48

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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.