Home / 21,872.03-30,175.84-12,310.38

Finding the Fourth Proportional to 21,872.03, 30,175.84 and 12,310.38

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Solution

The fourth proportional to 21,872.03, 30,175.84 and 12,310.38 is: 16,984.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,872.03 : 30,175.84 = 12,310.38 : x
  2. Step 2: Convert to fraction form
    21,872.03/30,175.84 = 12,310.38/x
  3. Step 3: Cross multiply
    21,872.03x = 30,175.84 × 12,310.38
  4. Step 4: Simplify right side
    21,872.03x = 371,476,072.61
  5. Step 5: Solve for x
    x = 371,476,072.61/21,872.03
  6. Step 6: Final answer
    x = 16,984.07

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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.