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Finding the Fourth Proportional to 19,603.26, 27,040.76 and 18,291.06

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Solution

The fourth proportional to 19,603.26, 27,040.76 and 18,291.06 is: 25,230.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.26 : 27,040.76 = 18,291.06 : x
  2. Step 2: Convert to fraction form
    19,603.26/27,040.76 = 18,291.06/x
  3. Step 3: Cross multiply
    19,603.26x = 27,040.76 × 18,291.06
  4. Step 4: Simplify right side
    19,603.26x = 494,604,163.61
  5. Step 5: Solve for x
    x = 494,604,163.61/19,603.26
  6. Step 6: Final answer
    x = 25,230.71

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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.