Home / 21,183.08-29,229.50-11,751.70

Finding the Fourth Proportional to 21,183.08, 29,229.50 and 11,751.70

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Solution

The fourth proportional to 21,183.08, 29,229.50 and 11,751.70 is: 16,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.08 : 29,229.50 = 11,751.70 : x
  2. Step 2: Convert to fraction form
    21,183.08/29,229.50 = 11,751.70/x
  3. Step 3: Cross multiply
    21,183.08x = 29,229.50 × 11,751.70
  4. Step 4: Simplify right side
    21,183.08x = 343,496,315.15
  5. Step 5: Solve for x
    x = 343,496,315.15/21,183.08
  6. Step 6: Final answer
    x = 16,215.60

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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.