Home / 20,123.96-30,186.27-11,234.13

Finding the Fourth Proportional to 20,123.96, 30,186.27 and 11,234.13

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Solution

The fourth proportional to 20,123.96, 30,186.27 and 11,234.13 is: 16,851.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.96 : 30,186.27 = 11,234.13 : x
  2. Step 2: Convert to fraction form
    20,123.96/30,186.27 = 11,234.13/x
  3. Step 3: Cross multiply
    20,123.96x = 30,186.27 × 11,234.13
  4. Step 4: Simplify right side
    20,123.96x = 339,116,481.40
  5. Step 5: Solve for x
    x = 339,116,481.40/20,123.96
  6. Step 6: Final answer
    x = 16,851.38

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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.