Home / 21,174.09-29,221.97-11,742.45

Finding the Fourth Proportional to 21,174.09, 29,221.97 and 11,742.45

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Solution

The fourth proportional to 21,174.09, 29,221.97 and 11,742.45 is: 16,205.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.09 : 29,221.97 = 11,742.45 : x
  2. Step 2: Convert to fraction form
    21,174.09/29,221.97 = 11,742.45/x
  3. Step 3: Cross multiply
    21,174.09x = 29,221.97 × 11,742.45
  4. Step 4: Simplify right side
    21,174.09x = 343,137,462.91
  5. Step 5: Solve for x
    x = 343,137,462.91/21,174.09
  6. Step 6: Final answer
    x = 16,205.54

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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.