Home / 21,174.56-29,217.78-11,743.20

Finding the Fourth Proportional to 21,174.56, 29,217.78 and 11,743.20

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Solution

The fourth proportional to 21,174.56, 29,217.78 and 11,743.20 is: 16,203.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.56 : 29,217.78 = 11,743.20 : x
  2. Step 2: Convert to fraction form
    21,174.56/29,217.78 = 11,743.20/x
  3. Step 3: Cross multiply
    21,174.56x = 29,217.78 × 11,743.20
  4. Step 4: Simplify right side
    21,174.56x = 343,110,234.10
  5. Step 5: Solve for x
    x = 343,110,234.10/21,174.56
  6. Step 6: Final answer
    x = 16,203.89

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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.