Home / 21,213.09-29,249.91-13,546.04

Finding the Fourth Proportional to 21,213.09, 29,249.91 and 13,546.04

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Solution

The fourth proportional to 21,213.09, 29,249.91 and 13,546.04 is: 18,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.09 : 29,249.91 = 13,546.04 : x
  2. Step 2: Convert to fraction form
    21,213.09/29,249.91 = 13,546.04/x
  3. Step 3: Cross multiply
    21,213.09x = 29,249.91 × 13,546.04
  4. Step 4: Simplify right side
    21,213.09x = 396,220,304.61
  5. Step 5: Solve for x
    x = 396,220,304.61/21,213.09
  6. Step 6: Final answer
    x = 18,678.10

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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.