Home / 21,137.94-29,163.71-12,184.20

Finding the Fourth Proportional to 21,137.94, 29,163.71 and 12,184.20

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Solution

The fourth proportional to 21,137.94, 29,163.71 and 12,184.20 is: 16,810.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.94 : 29,163.71 = 12,184.20 : x
  2. Step 2: Convert to fraction form
    21,137.94/29,163.71 = 12,184.20/x
  3. Step 3: Cross multiply
    21,137.94x = 29,163.71 × 12,184.20
  4. Step 4: Simplify right side
    21,137.94x = 355,336,505.84
  5. Step 5: Solve for x
    x = 355,336,505.84/21,137.94
  6. Step 6: Final answer
    x = 16,810.37

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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.