Home / 13,872.38-20,809.72-4,512.18

Finding the Fourth Proportional to 13,872.38, 20,809.72 and 4,512.18

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Solution

The fourth proportional to 13,872.38, 20,809.72 and 4,512.18 is: 6,768.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.38 : 20,809.72 = 4,512.18 : x
  2. Step 2: Convert to fraction form
    13,872.38/20,809.72 = 4,512.18/x
  3. Step 3: Cross multiply
    13,872.38x = 20,809.72 × 4,512.18
  4. Step 4: Simplify right side
    13,872.38x = 93,897,202.39
  5. Step 5: Solve for x
    x = 93,897,202.39/13,872.38
  6. Step 6: Final answer
    x = 6,768.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.