Home / 21,231.88-29,300.37-11,672.17

Finding the Fourth Proportional to 21,231.88, 29,300.37 and 11,672.17

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Solution

The fourth proportional to 21,231.88, 29,300.37 and 11,672.17 is: 16,107.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.88 : 29,300.37 = 11,672.17 : x
  2. Step 2: Convert to fraction form
    21,231.88/29,300.37 = 11,672.17/x
  3. Step 3: Cross multiply
    21,231.88x = 29,300.37 × 11,672.17
  4. Step 4: Simplify right side
    21,231.88x = 341,999,029.57
  5. Step 5: Solve for x
    x = 341,999,029.57/21,231.88
  6. Step 6: Final answer
    x = 16,107.80

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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.