Home / 18,955.19-28,448.27-13,413.87

Finding the Fourth Proportional to 18,955.19, 28,448.27 and 13,413.87

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Solution

The fourth proportional to 18,955.19, 28,448.27 and 13,413.87 is: 20,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955.19 : 28,448.27 = 13,413.87 : x
  2. Step 2: Convert to fraction form
    18,955.19/28,448.27 = 13,413.87/x
  3. Step 3: Cross multiply
    18,955.19x = 28,448.27 × 13,413.87
  4. Step 4: Simplify right side
    18,955.19x = 381,601,328.44
  5. Step 5: Solve for x
    x = 381,601,328.44/18,955.19
  6. Step 6: Final answer
    x = 20,131.76

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1.5x scale

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.