Home / 21,147.92-29,183.16-11,587.76

Finding the Fourth Proportional to 21,147.92, 29,183.16 and 11,587.76

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Solution

The fourth proportional to 21,147.92, 29,183.16 and 11,587.76 is: 15,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.92 : 29,183.16 = 11,587.76 : x
  2. Step 2: Convert to fraction form
    21,147.92/29,183.16 = 11,587.76/x
  3. Step 3: Cross multiply
    21,147.92x = 29,183.16 × 11,587.76
  4. Step 4: Simplify right side
    21,147.92x = 338,167,454.12
  5. Step 5: Solve for x
    x = 338,167,454.12/21,147.92
  6. Step 6: Final answer
    x = 15,990.58

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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.