Home / 20,738.46-28,616.19-12,240.93

Finding the Fourth Proportional to 20,738.46, 28,616.19 and 12,240.93

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Solution

The fourth proportional to 20,738.46, 28,616.19 and 12,240.93 is: 16,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.46 : 28,616.19 = 12,240.93 : x
  2. Step 2: Convert to fraction form
    20,738.46/28,616.19 = 12,240.93/x
  3. Step 3: Cross multiply
    20,738.46x = 28,616.19 × 12,240.93
  4. Step 4: Simplify right side
    20,738.46x = 350,288,778.66
  5. Step 5: Solve for x
    x = 350,288,778.66/20,738.46
  6. Step 6: Final answer
    x = 16,890.78

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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.