Home / 21,738.13-29,998.04-12,786.19

Finding the Fourth Proportional to 21,738.13, 29,998.04 and 12,786.19

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Solution

The fourth proportional to 21,738.13, 29,998.04 and 12,786.19 is: 17,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.13 : 29,998.04 = 12,786.19 : x
  2. Step 2: Convert to fraction form
    21,738.13/29,998.04 = 12,786.19/x
  3. Step 3: Cross multiply
    21,738.13x = 29,998.04 × 12,786.19
  4. Step 4: Simplify right side
    21,738.13x = 383,560,500.14
  5. Step 5: Solve for x
    x = 383,560,500.14/21,738.13
  6. Step 6: Final answer
    x = 17,644.60

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Double scale
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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.