Home / 20,072.35-27,699.87-11,120.42

Finding the Fourth Proportional to 20,072.35, 27,699.87 and 11,120.42

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Solution

The fourth proportional to 20,072.35, 27,699.87 and 11,120.42 is: 15,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.35 : 27,699.87 = 11,120.42 : x
  2. Step 2: Convert to fraction form
    20,072.35/27,699.87 = 11,120.42/x
  3. Step 3: Cross multiply
    20,072.35x = 27,699.87 × 11,120.42
  4. Step 4: Simplify right side
    20,072.35x = 308,034,299.30
  5. Step 5: Solve for x
    x = 308,034,299.30/20,072.35
  6. Step 6: Final answer
    x = 15,346.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.