Home / 21,636.86-29,858.63-12,205.22

Finding the Fourth Proportional to 21,636.86, 29,858.63 and 12,205.22

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Solution

The fourth proportional to 21,636.86, 29,858.63 and 12,205.22 is: 16,843.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.86 : 29,858.63 = 12,205.22 : x
  2. Step 2: Convert to fraction form
    21,636.86/29,858.63 = 12,205.22/x
  3. Step 3: Cross multiply
    21,636.86x = 29,858.63 × 12,205.22
  4. Step 4: Simplify right side
    21,636.86x = 364,430,937.73
  5. Step 5: Solve for x
    x = 364,430,937.73/21,636.86
  6. Step 6: Final answer
    x = 16,843.06

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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.