Home / 21,175.89-29,221.72-11,744.25

Finding the Fourth Proportional to 21,175.89, 29,221.72 and 11,744.25

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Solution

The fourth proportional to 21,175.89, 29,221.72 and 11,744.25 is: 16,206.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.89 : 29,221.72 = 11,744.25 : x
  2. Step 2: Convert to fraction form
    21,175.89/29,221.72 = 11,744.25/x
  3. Step 3: Cross multiply
    21,175.89x = 29,221.72 × 11,744.25
  4. Step 4: Simplify right side
    21,175.89x = 343,187,185.11
  5. Step 5: Solve for x
    x = 343,187,185.11/21,175.89
  6. Step 6: Final answer
    x = 16,206.51

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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.