Home / 20,427.72-30,645.44-7,100.21

Finding the Fourth Proportional to 20,427.72, 30,645.44 and 7,100.21

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Solution

The fourth proportional to 20,427.72, 30,645.44 and 7,100.21 is: 10,651.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.72 : 30,645.44 = 7,100.21 : x
  2. Step 2: Convert to fraction form
    20,427.72/30,645.44 = 7,100.21/x
  3. Step 3: Cross multiply
    20,427.72x = 30,645.44 × 7,100.21
  4. Step 4: Simplify right side
    20,427.72x = 217,589,153.91
  5. Step 5: Solve for x
    x = 217,589,153.91/20,427.72
  6. Step 6: Final answer
    x = 10,651.66

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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.