Home / 21,634.12-29,853.30-12,205

Finding the Fourth Proportional to 21,634.12, 29,853.30 and 12,205

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Solution

The fourth proportional to 21,634.12, 29,853.30 and 12,205 is: 16,841.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,634.12 : 29,853.30 = 12,205 : x
  2. Step 2: Convert to fraction form
    21,634.12/29,853.30 = 12,205/x
  3. Step 3: Cross multiply
    21,634.12x = 29,853.30 × 12,205
  4. Step 4: Simplify right side
    21,634.12x = 364,359,526.50
  5. Step 5: Solve for x
    x = 364,359,526.50/21,634.12
  6. Step 6: Final answer
    x = 16,841.89

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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.