Home / 21,882.65-30,198.18-12,451.22

Finding the Fourth Proportional to 21,882.65, 30,198.18 and 12,451.22

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Solution

The fourth proportional to 21,882.65, 30,198.18 and 12,451.22 is: 17,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,882.65 : 30,198.18 = 12,451.22 : x
  2. Step 2: Convert to fraction form
    21,882.65/30,198.18 = 12,451.22/x
  3. Step 3: Cross multiply
    21,882.65x = 30,198.18 × 12,451.22
  4. Step 4: Simplify right side
    21,882.65x = 376,004,031.79
  5. Step 5: Solve for x
    x = 376,004,031.79/21,882.65
  6. Step 6: Final answer
    x = 17,182.75

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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.