Home / 20,413.40-28,106.06-18,544.86

Finding the Fourth Proportional to 20,413.40, 28,106.06 and 18,544.86

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Solution

The fourth proportional to 20,413.40, 28,106.06 and 18,544.86 is: 25,533.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.40 : 28,106.06 = 18,544.86 : x
  2. Step 2: Convert to fraction form
    20,413.40/28,106.06 = 18,544.86/x
  3. Step 3: Cross multiply
    20,413.40x = 28,106.06 × 18,544.86
  4. Step 4: Simplify right side
    20,413.40x = 521,222,855.13
  5. Step 5: Solve for x
    x = 521,222,855.13/20,413.40
  6. Step 6: Final answer
    x = 25,533.37

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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.