Home / 21,149.88-29,184.94-11,715.96

Finding the Fourth Proportional to 21,149.88, 29,184.94 and 11,715.96

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Solution

The fourth proportional to 21,149.88, 29,184.94 and 11,715.96 is: 16,166.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.88 : 29,184.94 = 11,715.96 : x
  2. Step 2: Convert to fraction form
    21,149.88/29,184.94 = 11,715.96/x
  3. Step 3: Cross multiply
    21,149.88x = 29,184.94 × 11,715.96
  4. Step 4: Simplify right side
    21,149.88x = 341,929,589.64
  5. Step 5: Solve for x
    x = 341,929,589.64/21,149.88
  6. Step 6: Final answer
    x = 16,166.98

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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.