Home / 21,169.91-29,214.33-11,738.45

Finding the Fourth Proportional to 21,169.91, 29,214.33 and 11,738.45

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Solution

The fourth proportional to 21,169.91, 29,214.33 and 11,738.45 is: 16,198.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.91 : 29,214.33 = 11,738.45 : x
  2. Step 2: Convert to fraction form
    21,169.91/29,214.33 = 11,738.45/x
  3. Step 3: Cross multiply
    21,169.91x = 29,214.33 × 11,738.45
  4. Step 4: Simplify right side
    21,169.91x = 342,930,951.99
  5. Step 5: Solve for x
    x = 342,930,951.99/21,169.91
  6. Step 6: Final answer
    x = 16,198.98

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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.