Home / 21,169.92-29,213.06-12,217.80

Finding the Fourth Proportional to 21,169.92, 29,213.06 and 12,217.80

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Solution

The fourth proportional to 21,169.92, 29,213.06 and 12,217.80 is: 16,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.92 : 29,213.06 = 12,217.80 : x
  2. Step 2: Convert to fraction form
    21,169.92/29,213.06 = 12,217.80/x
  3. Step 3: Cross multiply
    21,169.92x = 29,213.06 × 12,217.80
  4. Step 4: Simplify right side
    21,169.92x = 356,919,324.47
  5. Step 5: Solve for x
    x = 356,919,324.47/21,169.92
  6. Step 6: Final answer
    x = 16,859.74

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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.