Home / 21,183.40-29,234.88-11,755

Finding the Fourth Proportional to 21,183.40, 29,234.88 and 11,755

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Solution

The fourth proportional to 21,183.40, 29,234.88 and 11,755 is: 16,222.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.40 : 29,234.88 = 11,755 : x
  2. Step 2: Convert to fraction form
    21,183.40/29,234.88 = 11,755/x
  3. Step 3: Cross multiply
    21,183.40x = 29,234.88 × 11,755
  4. Step 4: Simplify right side
    21,183.40x = 343,656,014.40
  5. Step 5: Solve for x
    x = 343,656,014.40/21,183.40
  6. Step 6: Final answer
    x = 16,222.89

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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.