Home / 21,205.80-29,261.25-11,772.54

Finding the Fourth Proportional to 21,205.80, 29,261.25 and 11,772.54

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Solution

The fourth proportional to 21,205.80, 29,261.25 and 11,772.54 is: 16,244.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.80 : 29,261.25 = 11,772.54 : x
  2. Step 2: Convert to fraction form
    21,205.80/29,261.25 = 11,772.54/x
  3. Step 3: Cross multiply
    21,205.80x = 29,261.25 × 11,772.54
  4. Step 4: Simplify right side
    21,205.80x = 344,479,236.08
  5. Step 5: Solve for x
    x = 344,479,236.08/21,205.80
  6. Step 6: Final answer
    x = 16,244.58

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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.