Home / 28,559.68-39,413.82-15,814.28

Finding the Fourth Proportional to 28,559.68, 39,413.82 and 15,814.28

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Solution

The fourth proportional to 28,559.68, 39,413.82 and 15,814.28 is: 21,824.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.68 : 39,413.82 = 15,814.28 : x
  2. Step 2: Convert to fraction form
    28,559.68/39,413.82 = 15,814.28/x
  3. Step 3: Cross multiply
    28,559.68x = 39,413.82 × 15,814.28
  4. Step 4: Simplify right side
    28,559.68x = 623,300,982.66
  5. Step 5: Solve for x
    x = 623,300,982.66/28,559.68
  6. Step 6: Final answer
    x = 21,824.51

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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.