Home / 21,175.11-29,221.88-11,744.28

Finding the Fourth Proportional to 21,175.11, 29,221.88 and 11,744.28

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Solution

The fourth proportional to 21,175.11, 29,221.88 and 11,744.28 is: 16,207.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.11 : 29,221.88 = 11,744.28 : x
  2. Step 2: Convert to fraction form
    21,175.11/29,221.88 = 11,744.28/x
  3. Step 3: Cross multiply
    21,175.11x = 29,221.88 × 11,744.28
  4. Step 4: Simplify right side
    21,175.11x = 343,189,882.13
  5. Step 5: Solve for x
    x = 343,189,882.13/21,175.11
  6. Step 6: Final answer
    x = 16,207.23

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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.