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Finding the Fourth Proportional to 28,793.79, 39,736.78 and 16,860.97

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Solution

The fourth proportional to 28,793.79, 39,736.78 and 16,860.97 is: 23,268.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.79 : 39,736.78 = 16,860.97 : x
  2. Step 2: Convert to fraction form
    28,793.79/39,736.78 = 16,860.97/x
  3. Step 3: Cross multiply
    28,793.79x = 39,736.78 × 16,860.97
  4. Step 4: Simplify right side
    28,793.79x = 670,000,655.48
  5. Step 5: Solve for x
    x = 670,000,655.48/28,793.79
  6. Step 6: Final answer
    x = 23,268.93

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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.