Home / 21,175.28-29,221.44-11,743.64

Finding the Fourth Proportional to 21,175.28, 29,221.44 and 11,743.64

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Solution

The fourth proportional to 21,175.28, 29,221.44 and 11,743.64 is: 16,205.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.28 : 29,221.44 = 11,743.64 : x
  2. Step 2: Convert to fraction form
    21,175.28/29,221.44 = 11,743.64/x
  3. Step 3: Cross multiply
    21,175.28x = 29,221.44 × 11,743.64
  4. Step 4: Simplify right side
    21,175.28x = 343,166,071.64
  5. Step 5: Solve for x
    x = 343,166,071.64/21,175.28
  6. Step 6: Final answer
    x = 16,205.98

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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.