Home / 21,638.43-29,863.49-12,206.25

Finding the Fourth Proportional to 21,638.43, 29,863.49 and 12,206.25

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Solution

The fourth proportional to 21,638.43, 29,863.49 and 12,206.25 is: 16,846.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.43 : 29,863.49 = 12,206.25 : x
  2. Step 2: Convert to fraction form
    21,638.43/29,863.49 = 12,206.25/x
  3. Step 3: Cross multiply
    21,638.43x = 29,863.49 × 12,206.25
  4. Step 4: Simplify right side
    21,638.43x = 364,521,163.78
  5. Step 5: Solve for x
    x = 364,521,163.78/21,638.43
  6. Step 6: Final answer
    x = 16,846.01

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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.