Home / 22,378.72-30,882.82-12,169.78

Finding the Fourth Proportional to 22,378.72, 30,882.82 and 12,169.78

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Solution

The fourth proportional to 22,378.72, 30,882.82 and 12,169.78 is: 16,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,378.72 : 30,882.82 = 12,169.78 : x
  2. Step 2: Convert to fraction form
    22,378.72/30,882.82 = 12,169.78/x
  3. Step 3: Cross multiply
    22,378.72x = 30,882.82 × 12,169.78
  4. Step 4: Simplify right side
    22,378.72x = 375,837,125.18
  5. Step 5: Solve for x
    x = 375,837,125.18/22,378.72
  6. Step 6: Final answer
    x = 16,794.40

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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.