Home / 20,068.46-30,102.69-6,919.80

Finding the Fourth Proportional to 20,068.46, 30,102.69 and 6,919.80

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Solution

The fourth proportional to 20,068.46, 30,102.69 and 6,919.80 is: 10,379.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.46 : 30,102.69 = 6,919.80 : x
  2. Step 2: Convert to fraction form
    20,068.46/30,102.69 = 6,919.80/x
  3. Step 3: Cross multiply
    20,068.46x = 30,102.69 × 6,919.80
  4. Step 4: Simplify right side
    20,068.46x = 208,304,722.39
  5. Step 5: Solve for x
    x = 208,304,722.39/20,068.46
  6. Step 6: Final answer
    x = 10,379.71

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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.