Home / 20,374.12-30,553.89-11,021.05

Finding the Fourth Proportional to 20,374.12, 30,553.89 and 11,021.05

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Solution

The fourth proportional to 20,374.12, 30,553.89 and 11,021.05 is: 16,527.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.12 : 30,553.89 = 11,021.05 : x
  2. Step 2: Convert to fraction form
    20,374.12/30,553.89 = 11,021.05/x
  3. Step 3: Cross multiply
    20,374.12x = 30,553.89 × 11,021.05
  4. Step 4: Simplify right side
    20,374.12x = 336,735,949.38
  5. Step 5: Solve for x
    x = 336,735,949.38/20,374.12
  6. Step 6: Final answer
    x = 16,527.63

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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.