Home / 21,174.24-29,221.92-11,743.68

Finding the Fourth Proportional to 21,174.24, 29,221.92 and 11,743.68

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Solution

The fourth proportional to 21,174.24, 29,221.92 and 11,743.68 is: 16,207.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.24 : 29,221.92 = 11,743.68 : x
  2. Step 2: Convert to fraction form
    21,174.24/29,221.92 = 11,743.68/x
  3. Step 3: Cross multiply
    21,174.24x = 29,221.92 × 11,743.68
  4. Step 4: Simplify right side
    21,174.24x = 343,172,877.47
  5. Step 5: Solve for x
    x = 343,172,877.47/21,174.24
  6. Step 6: Final answer
    x = 16,207.09

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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.