Home / 20,450.42-30,505.29-20,111.73

Finding the Fourth Proportional to 20,450.42, 30,505.29 and 20,111.73

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Solution

The fourth proportional to 20,450.42, 30,505.29 and 20,111.73 is: 30,000.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.42 : 30,505.29 = 20,111.73 : x
  2. Step 2: Convert to fraction form
    20,450.42/30,505.29 = 20,111.73/x
  3. Step 3: Cross multiply
    20,450.42x = 30,505.29 × 20,111.73
  4. Step 4: Simplify right side
    20,450.42x = 613,514,195.03
  5. Step 5: Solve for x
    x = 613,514,195.03/20,450.42
  6. Step 6: Final answer
    x = 30,000.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.