Home / 20,837.70-28,756.05-11,884.97

Finding the Fourth Proportional to 20,837.70, 28,756.05 and 11,884.97

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Solution

The fourth proportional to 20,837.70, 28,756.05 and 11,884.97 is: 16,401.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.70 : 28,756.05 = 11,884.97 : x
  2. Step 2: Convert to fraction form
    20,837.70/28,756.05 = 11,884.97/x
  3. Step 3: Cross multiply
    20,837.70x = 28,756.05 × 11,884.97
  4. Step 4: Simplify right side
    20,837.70x = 341,764,732.14
  5. Step 5: Solve for x
    x = 341,764,732.14/20,837.70
  6. Step 6: Final answer
    x = 16,401.27

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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.