Home / 18,413.16-25,405.74-10,858.90

Finding the Fourth Proportional to 18,413.16, 25,405.74 and 10,858.90

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Solution

The fourth proportional to 18,413.16, 25,405.74 and 10,858.90 is: 14,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.16 : 25,405.74 = 10,858.90 : x
  2. Step 2: Convert to fraction form
    18,413.16/25,405.74 = 10,858.90/x
  3. Step 3: Cross multiply
    18,413.16x = 25,405.74 × 10,858.90
  4. Step 4: Simplify right side
    18,413.16x = 275,878,390.09
  5. Step 5: Solve for x
    x = 275,878,390.09/18,413.16
  6. Step 6: Final answer
    x = 14,982.67

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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.