Home / 20,021.74-30,022.42-6,689.94

Finding the Fourth Proportional to 20,021.74, 30,022.42 and 6,689.94

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Solution

The fourth proportional to 20,021.74, 30,022.42 and 6,689.94 is: 10,031.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.74 : 30,022.42 = 6,689.94 : x
  2. Step 2: Convert to fraction form
    20,021.74/30,022.42 = 6,689.94/x
  3. Step 3: Cross multiply
    20,021.74x = 30,022.42 × 6,689.94
  4. Step 4: Simplify right side
    20,021.74x = 200,848,188.45
  5. Step 5: Solve for x
    x = 200,848,188.45/20,021.74
  6. Step 6: Final answer
    x = 10,031.51

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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.