Home / 20,083.05-30,127.23-7,431.09

Finding the Fourth Proportional to 20,083.05, 30,127.23 and 7,431.09

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Solution

The fourth proportional to 20,083.05, 30,127.23 and 7,431.09 is: 11,147.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.05 : 30,127.23 = 7,431.09 : x
  2. Step 2: Convert to fraction form
    20,083.05/30,127.23 = 7,431.09/x
  3. Step 3: Cross multiply
    20,083.05x = 30,127.23 × 7,431.09
  4. Step 4: Simplify right side
    20,083.05x = 223,878,044.60
  5. Step 5: Solve for x
    x = 223,878,044.60/20,083.05
  6. Step 6: Final answer
    x = 11,147.61

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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.