Home / 28,560.25-39,413.28-15,987.43

Finding the Fourth Proportional to 28,560.25, 39,413.28 and 15,987.43

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Solution

The fourth proportional to 28,560.25, 39,413.28 and 15,987.43 is: 22,062.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.25 : 39,413.28 = 15,987.43 : x
  2. Step 2: Convert to fraction form
    28,560.25/39,413.28 = 15,987.43/x
  3. Step 3: Cross multiply
    28,560.25x = 39,413.28 × 15,987.43
  4. Step 4: Simplify right side
    28,560.25x = 630,117,055.07
  5. Step 5: Solve for x
    x = 630,117,055.07/28,560.25
  6. Step 6: Final answer
    x = 22,062.73

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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.