Home / 28,741.71-39,650.54-20,771.31

Finding the Fourth Proportional to 28,741.71, 39,650.54 and 20,771.31

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Solution

The fourth proportional to 28,741.71, 39,650.54 and 20,771.31 is: 28,654.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,741.71 : 39,650.54 = 20,771.31 : x
  2. Step 2: Convert to fraction form
    28,741.71/39,650.54 = 20,771.31/x
  3. Step 3: Cross multiply
    28,741.71x = 39,650.54 × 20,771.31
  4. Step 4: Simplify right side
    28,741.71x = 823,593,554.15
  5. Step 5: Solve for x
    x = 823,593,554.15/28,741.71
  6. Step 6: Final answer
    x = 28,654.99

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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.