Home / 21,520.35-29,739.15-16,205.94

Finding the Fourth Proportional to 21,520.35, 29,739.15 and 16,205.94

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Solution

The fourth proportional to 21,520.35, 29,739.15 and 16,205.94 is: 22,395.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.35 : 29,739.15 = 16,205.94 : x
  2. Step 2: Convert to fraction form
    21,520.35/29,739.15 = 16,205.94/x
  3. Step 3: Cross multiply
    21,520.35x = 29,739.15 × 16,205.94
  4. Step 4: Simplify right side
    21,520.35x = 481,950,880.55
  5. Step 5: Solve for x
    x = 481,950,880.55/21,520.35
  6. Step 6: Final answer
    x = 22,395.12

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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.