Home / 28,548-39,413.52-18,629.28

Finding the Fourth Proportional to 28,548, 39,413.52 and 18,629.28

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Solution

The fourth proportional to 28,548, 39,413.52 and 18,629.28 is: 25,719.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,548 : 39,413.52 = 18,629.28 : x
  2. Step 2: Convert to fraction form
    28,548/39,413.52 = 18,629.28/x
  3. Step 3: Cross multiply
    28,548x = 39,413.52 × 18,629.28
  4. Step 4: Simplify right side
    28,548x = 734,245,499.87
  5. Step 5: Solve for x
    x = 734,245,499.87/28,548
  6. Step 6: Final answer
    x = 25,719.68

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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.