Home / 28,815.03-39,741.69-19,860.48

Finding the Fourth Proportional to 28,815.03, 39,741.69 and 19,860.48

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Solution

The fourth proportional to 28,815.03, 39,741.69 and 19,860.48 is: 27,391.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.03 : 39,741.69 = 19,860.48 : x
  2. Step 2: Convert to fraction form
    28,815.03/39,741.69 = 19,860.48/x
  3. Step 3: Cross multiply
    28,815.03x = 39,741.69 × 19,860.48
  4. Step 4: Simplify right side
    28,815.03x = 789,289,039.41
  5. Step 5: Solve for x
    x = 789,289,039.41/28,815.03
  6. Step 6: Final answer
    x = 27,391.57

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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.