Home / 21,190.80-29,243.16-11,759.52

Finding the Fourth Proportional to 21,190.80, 29,243.16 and 11,759.52

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Solution

The fourth proportional to 21,190.80, 29,243.16 and 11,759.52 is: 16,228.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.80 : 29,243.16 = 11,759.52 : x
  2. Step 2: Convert to fraction form
    21,190.80/29,243.16 = 11,759.52/x
  3. Step 3: Cross multiply
    21,190.80x = 29,243.16 × 11,759.52
  4. Step 4: Simplify right side
    21,190.80x = 343,885,524.88
  5. Step 5: Solve for x
    x = 343,885,524.88/21,190.80
  6. Step 6: Final answer
    x = 16,228.06

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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.