Home / 28,736.65-39,643.55-20,766.25

Finding the Fourth Proportional to 28,736.65, 39,643.55 and 20,766.25

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Solution

The fourth proportional to 28,736.65, 39,643.55 and 20,766.25 is: 28,648.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,736.65 : 39,643.55 = 20,766.25 : x
  2. Step 2: Convert to fraction form
    28,736.65/39,643.55 = 20,766.25/x
  3. Step 3: Cross multiply
    28,736.65x = 39,643.55 × 20,766.25
  4. Step 4: Simplify right side
    28,736.65x = 823,247,745.12
  5. Step 5: Solve for x
    x = 823,247,745.12/28,736.65
  6. Step 6: Final answer
    x = 28,648.01

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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.