Home / 21,163.32-29,205.09-11,731.68

Finding the Fourth Proportional to 21,163.32, 29,205.09 and 11,731.68

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Solution

The fourth proportional to 21,163.32, 29,205.09 and 11,731.68 is: 16,189.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.32 : 29,205.09 = 11,731.68 : x
  2. Step 2: Convert to fraction form
    21,163.32/29,205.09 = 11,731.68/x
  3. Step 3: Cross multiply
    21,163.32x = 29,205.09 × 11,731.68
  4. Step 4: Simplify right side
    21,163.32x = 342,624,770.25
  5. Step 5: Solve for x
    x = 342,624,770.25/21,163.32
  6. Step 6: Final answer
    x = 16,189.56

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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.