Home / 21,841.23-30,133.98-12,891.81

Finding the Fourth Proportional to 21,841.23, 30,133.98 and 12,891.81

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Solution

The fourth proportional to 21,841.23, 30,133.98 and 12,891.81 is: 17,786.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,841.23 : 30,133.98 = 12,891.81 : x
  2. Step 2: Convert to fraction form
    21,841.23/30,133.98 = 12,891.81/x
  3. Step 3: Cross multiply
    21,841.23x = 30,133.98 × 12,891.81
  4. Step 4: Simplify right side
    21,841.23x = 388,481,544.70
  5. Step 5: Solve for x
    x = 388,481,544.70/21,841.23
  6. Step 6: Final answer
    x = 17,786.61

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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.