Home / 21,321.82-29,425.44-12,371.32

Finding the Fourth Proportional to 21,321.82, 29,425.44 and 12,371.32

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Solution

The fourth proportional to 21,321.82, 29,425.44 and 12,371.32 is: 17,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.82 : 29,425.44 = 12,371.32 : x
  2. Step 2: Convert to fraction form
    21,321.82/29,425.44 = 12,371.32/x
  3. Step 3: Cross multiply
    21,321.82x = 29,425.44 × 12,371.32
  4. Step 4: Simplify right side
    21,321.82x = 364,031,534.38
  5. Step 5: Solve for x
    x = 364,031,534.38/21,321.82
  6. Step 6: Final answer
    x = 17,073.19

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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.