Home / 28,542.80-39,387.66-15,795.75

Finding the Fourth Proportional to 28,542.80, 39,387.66 and 15,795.75

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Solution

The fourth proportional to 28,542.80, 39,387.66 and 15,795.75 is: 21,797.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,542.80 : 39,387.66 = 15,795.75 : x
  2. Step 2: Convert to fraction form
    28,542.80/39,387.66 = 15,795.75/x
  3. Step 3: Cross multiply
    28,542.80x = 39,387.66 × 15,795.75
  4. Step 4: Simplify right side
    28,542.80x = 622,157,630.45
  5. Step 5: Solve for x
    x = 622,157,630.45/28,542.80
  6. Step 6: Final answer
    x = 21,797.36

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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.