Home / 21,183.12-29,233.71-11,751.75

Finding the Fourth Proportional to 21,183.12, 29,233.71 and 11,751.75

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Solution

The fourth proportional to 21,183.12, 29,233.71 and 11,751.75 is: 16,217.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.12 : 29,233.71 = 11,751.75 : x
  2. Step 2: Convert to fraction form
    21,183.12/29,233.71 = 11,751.75/x
  3. Step 3: Cross multiply
    21,183.12x = 29,233.71 × 11,751.75
  4. Step 4: Simplify right side
    21,183.12x = 343,547,251.49
  5. Step 5: Solve for x
    x = 343,547,251.49/21,183.12
  6. Step 6: Final answer
    x = 16,217.97

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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.