Home / 21,190.63-29,243.68-11,759.80

Finding the Fourth Proportional to 21,190.63, 29,243.68 and 11,759.80

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Solution

The fourth proportional to 21,190.63, 29,243.68 and 11,759.80 is: 16,228.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.63 : 29,243.68 = 11,759.80 : x
  2. Step 2: Convert to fraction form
    21,190.63/29,243.68 = 11,759.80/x
  3. Step 3: Cross multiply
    21,190.63x = 29,243.68 × 11,759.80
  4. Step 4: Simplify right side
    21,190.63x = 343,899,769.27
  5. Step 5: Solve for x
    x = 343,899,769.27/21,190.63
  6. Step 6: Final answer
    x = 16,228.86

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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.