Home / 20,472.36-28,249.86-11,519.70

Finding the Fourth Proportional to 20,472.36, 28,249.86 and 11,519.70

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Solution

The fourth proportional to 20,472.36, 28,249.86 and 11,519.70 is: 15,896.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.36 : 28,249.86 = 11,519.70 : x
  2. Step 2: Convert to fraction form
    20,472.36/28,249.86 = 11,519.70/x
  3. Step 3: Cross multiply
    20,472.36x = 28,249.86 × 11,519.70
  4. Step 4: Simplify right side
    20,472.36x = 325,429,912.24
  5. Step 5: Solve for x
    x = 325,429,912.24/20,472.36
  6. Step 6: Final answer
    x = 15,896.06

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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.