Home / 21,162.40-29,205.84-11,734

Finding the Fourth Proportional to 21,162.40, 29,205.84 and 11,734

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Solution

The fourth proportional to 21,162.40, 29,205.84 and 11,734 is: 16,193.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.40 : 29,205.84 = 11,734 : x
  2. Step 2: Convert to fraction form
    21,162.40/29,205.84 = 11,734/x
  3. Step 3: Cross multiply
    21,162.40x = 29,205.84 × 11,734
  4. Step 4: Simplify right side
    21,162.40x = 342,701,326.56
  5. Step 5: Solve for x
    x = 342,701,326.56/21,162.40
  6. Step 6: Final answer
    x = 16,193.88

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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.