Home / 15,380.97-21,311.31-15,048.69

Finding the Fourth Proportional to 15,380.97, 21,311.31 and 15,048.69

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Solution

The fourth proportional to 15,380.97, 21,311.31 and 15,048.69 is: 20,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.97 : 21,311.31 = 15,048.69 : x
  2. Step 2: Convert to fraction form
    15,380.97/21,311.31 = 15,048.69/x
  3. Step 3: Cross multiply
    15,380.97x = 21,311.31 × 15,048.69
  4. Step 4: Simplify right side
    15,380.97x = 320,707,297.68
  5. Step 5: Solve for x
    x = 320,707,297.68/15,380.97
  6. Step 6: Final answer
    x = 20,850.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.