Home / 21,198.73-29,248.32-13,249.03

Finding the Fourth Proportional to 21,198.73, 29,248.32 and 13,249.03

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Solution

The fourth proportional to 21,198.73, 29,248.32 and 13,249.03 is: 18,279.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.73 : 29,248.32 = 13,249.03 : x
  2. Step 2: Convert to fraction form
    21,198.73/29,248.32 = 13,249.03/x
  3. Step 3: Cross multiply
    21,198.73x = 29,248.32 × 13,249.03
  4. Step 4: Simplify right side
    21,198.73x = 387,511,869.13
  5. Step 5: Solve for x
    x = 387,511,869.13/21,198.73
  6. Step 6: Final answer
    x = 18,279.96

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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.