Home / 18,821.05-25,984.31-11,757.04

Finding the Fourth Proportional to 18,821.05, 25,984.31 and 11,757.04

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Solution

The fourth proportional to 18,821.05, 25,984.31 and 11,757.04 is: 16,231.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.05 : 25,984.31 = 11,757.04 : x
  2. Step 2: Convert to fraction form
    18,821.05/25,984.31 = 11,757.04/x
  3. Step 3: Cross multiply
    18,821.05x = 25,984.31 × 11,757.04
  4. Step 4: Simplify right side
    18,821.05x = 305,498,572.04
  5. Step 5: Solve for x
    x = 305,498,572.04/18,821.05
  6. Step 6: Final answer
    x = 16,231.75

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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.