Home / 21,882.21-30,198.05-13,384.19

Finding the Fourth Proportional to 21,882.21, 30,198.05 and 13,384.19

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Solution

The fourth proportional to 21,882.21, 30,198.05 and 13,384.19 is: 18,470.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,882.21 : 30,198.05 = 13,384.19 : x
  2. Step 2: Convert to fraction form
    21,882.21/30,198.05 = 13,384.19/x
  3. Step 3: Cross multiply
    21,882.21x = 30,198.05 × 13,384.19
  4. Step 4: Simplify right side
    21,882.21x = 404,176,220.92
  5. Step 5: Solve for x
    x = 404,176,220.92/21,882.21
  6. Step 6: Final answer
    x = 18,470.54

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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.