Home / 14,119.70-21,186.97-6,722.78

Finding the Fourth Proportional to 14,119.70, 21,186.97 and 6,722.78

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Solution

The fourth proportional to 14,119.70, 21,186.97 and 6,722.78 is: 10,087.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.70 : 21,186.97 = 6,722.78 : x
  2. Step 2: Convert to fraction form
    14,119.70/21,186.97 = 6,722.78/x
  3. Step 3: Cross multiply
    14,119.70x = 21,186.97 × 6,722.78
  4. Step 4: Simplify right side
    14,119.70x = 142,435,215.43
  5. Step 5: Solve for x
    x = 142,435,215.43/14,119.70
  6. Step 6: Final answer
    x = 10,087.70

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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.