Home / 21,185.52-29,236.20-11,754

Finding the Fourth Proportional to 21,185.52, 29,236.20 and 11,754

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Solution

The fourth proportional to 21,185.52, 29,236.20 and 11,754 is: 16,220.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.52 : 29,236.20 = 11,754 : x
  2. Step 2: Convert to fraction form
    21,185.52/29,236.20 = 11,754/x
  3. Step 3: Cross multiply
    21,185.52x = 29,236.20 × 11,754
  4. Step 4: Simplify right side
    21,185.52x = 343,642,294.80
  5. Step 5: Solve for x
    x = 343,642,294.80/21,185.52
  6. Step 6: Final answer
    x = 16,220.62

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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.