Home / 20,419.72-30,580.36-11,627.98

Finding the Fourth Proportional to 20,419.72, 30,580.36 and 11,627.98

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Solution

The fourth proportional to 20,419.72, 30,580.36 and 11,627.98 is: 17,413.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.72 : 30,580.36 = 11,627.98 : x
  2. Step 2: Convert to fraction form
    20,419.72/30,580.36 = 11,627.98/x
  3. Step 3: Cross multiply
    20,419.72x = 30,580.36 × 11,627.98
  4. Step 4: Simplify right side
    20,419.72x = 355,587,708.95
  5. Step 5: Solve for x
    x = 355,587,708.95/20,419.72
  6. Step 6: Final answer
    x = 17,413.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.