Home / 21,645.82-29,871.24-12,215.26

Finding the Fourth Proportional to 21,645.82, 29,871.24 and 12,215.26

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Solution

The fourth proportional to 21,645.82, 29,871.24 and 12,215.26 is: 16,857.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,645.82 : 29,871.24 = 12,215.26 : x
  2. Step 2: Convert to fraction form
    21,645.82/29,871.24 = 12,215.26/x
  3. Step 3: Cross multiply
    21,645.82x = 29,871.24 × 12,215.26
  4. Step 4: Simplify right side
    21,645.82x = 364,884,963.12
  5. Step 5: Solve for x
    x = 364,884,963.12/21,645.82
  6. Step 6: Final answer
    x = 16,857.06

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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.