Home / 20,768.50-28,673.49-13,329.46

Finding the Fourth Proportional to 20,768.50, 28,673.49 and 13,329.46

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Solution

The fourth proportional to 20,768.50, 28,673.49 and 13,329.46 is: 18,402.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.50 : 28,673.49 = 13,329.46 : x
  2. Step 2: Convert to fraction form
    20,768.50/28,673.49 = 13,329.46/x
  3. Step 3: Cross multiply
    20,768.50x = 28,673.49 × 13,329.46
  4. Step 4: Simplify right side
    20,768.50x = 382,202,138.02
  5. Step 5: Solve for x
    x = 382,202,138.02/20,768.50
  6. Step 6: Final answer
    x = 18,402.97

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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.