Home / 21,229.25-29,297.58-11,800.85

Finding the Fourth Proportional to 21,229.25, 29,297.58 and 11,800.85

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Solution

The fourth proportional to 21,229.25, 29,297.58 and 11,800.85 is: 16,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.25 : 29,297.58 = 11,800.85 : x
  2. Step 2: Convert to fraction form
    21,229.25/29,297.58 = 11,800.85/x
  3. Step 3: Cross multiply
    21,229.25x = 29,297.58 × 11,800.85
  4. Step 4: Simplify right side
    21,229.25x = 345,736,346.94
  5. Step 5: Solve for x
    x = 345,736,346.94/21,229.25
  6. Step 6: Final answer
    x = 16,285.85

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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.