Home / 21,874.91-30,190.25-12,441.65

Finding the Fourth Proportional to 21,874.91, 30,190.25 and 12,441.65

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Solution

The fourth proportional to 21,874.91, 30,190.25 and 12,441.65 is: 17,171.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,874.91 : 30,190.25 = 12,441.65 : x
  2. Step 2: Convert to fraction form
    21,874.91/30,190.25 = 12,441.65/x
  3. Step 3: Cross multiply
    21,874.91x = 30,190.25 × 12,441.65
  4. Step 4: Simplify right side
    21,874.91x = 375,616,404.07
  5. Step 5: Solve for x
    x = 375,616,404.07/21,874.91
  6. Step 6: Final answer
    x = 17,171.11

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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.