Home / 21,229.75-29,298.27-11,801.35

Finding the Fourth Proportional to 21,229.75, 29,298.27 and 11,801.35

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Solution

The fourth proportional to 21,229.75, 29,298.27 and 11,801.35 is: 16,286.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.75 : 29,298.27 = 11,801.35 : x
  2. Step 2: Convert to fraction form
    21,229.75/29,298.27 = 11,801.35/x
  3. Step 3: Cross multiply
    21,229.75x = 29,298.27 × 11,801.35
  4. Step 4: Simplify right side
    21,229.75x = 345,759,138.66
  5. Step 5: Solve for x
    x = 345,759,138.66/21,229.75
  6. Step 6: Final answer
    x = 16,286.54

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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.