Home / 15,255.20-21,037.39-11,896.79

Finding the Fourth Proportional to 15,255.20, 21,037.39 and 11,896.79

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Solution

The fourth proportional to 15,255.20, 21,037.39 and 11,896.79 is: 16,406.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,255.20 : 21,037.39 = 11,896.79 : x
  2. Step 2: Convert to fraction form
    15,255.20/21,037.39 = 11,896.79/x
  3. Step 3: Cross multiply
    15,255.20x = 21,037.39 × 11,896.79
  4. Step 4: Simplify right side
    15,255.20x = 250,277,351.49
  5. Step 5: Solve for x
    x = 250,277,351.49/15,255.20
  6. Step 6: Final answer
    x = 16,406.04

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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.