Home / 21,137.24-29,169.34-12,184.70

Finding the Fourth Proportional to 21,137.24, 29,169.34 and 12,184.70

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Solution

The fourth proportional to 21,137.24, 29,169.34 and 12,184.70 is: 16,814.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.24 : 29,169.34 = 12,184.70 : x
  2. Step 2: Convert to fraction form
    21,137.24/29,169.34 = 12,184.70/x
  3. Step 3: Cross multiply
    21,137.24x = 29,169.34 × 12,184.70
  4. Step 4: Simplify right side
    21,137.24x = 355,419,480.79
  5. Step 5: Solve for x
    x = 355,419,480.79/21,137.24
  6. Step 6: Final answer
    x = 16,814.85

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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.