Home / 21,763.14-30,021.67-13,263.20

Finding the Fourth Proportional to 21,763.14, 30,021.67 and 13,263.20

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Solution

The fourth proportional to 21,763.14, 30,021.67 and 13,263.20 is: 18,296.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763.14 : 30,021.67 = 13,263.20 : x
  2. Step 2: Convert to fraction form
    21,763.14/30,021.67 = 13,263.20/x
  3. Step 3: Cross multiply
    21,763.14x = 30,021.67 × 13,263.20
  4. Step 4: Simplify right side
    21,763.14x = 398,183,413.54
  5. Step 5: Solve for x
    x = 398,183,413.54/21,763.14
  6. Step 6: Final answer
    x = 18,296.23

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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.