Home / 20,633.18-28,474.46-11,680.49

Finding the Fourth Proportional to 20,633.18, 28,474.46 and 11,680.49

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Solution

The fourth proportional to 20,633.18, 28,474.46 and 11,680.49 is: 16,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.18 : 28,474.46 = 11,680.49 : x
  2. Step 2: Convert to fraction form
    20,633.18/28,474.46 = 11,680.49/x
  3. Step 3: Cross multiply
    20,633.18x = 28,474.46 × 11,680.49
  4. Step 4: Simplify right side
    20,633.18x = 332,595,745.67
  5. Step 5: Solve for x
    x = 332,595,745.67/20,633.18
  6. Step 6: Final answer
    x = 16,119.47

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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.