Home / 21,486.84-29,651.50-11,926.72

Finding the Fourth Proportional to 21,486.84, 29,651.50 and 11,926.72

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Solution

The fourth proportional to 21,486.84, 29,651.50 and 11,926.72 is: 16,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.84 : 29,651.50 = 11,926.72 : x
  2. Step 2: Convert to fraction form
    21,486.84/29,651.50 = 11,926.72/x
  3. Step 3: Cross multiply
    21,486.84x = 29,651.50 × 11,926.72
  4. Step 4: Simplify right side
    21,486.84x = 353,645,138.08
  5. Step 5: Solve for x
    x = 353,645,138.08/21,486.84
  6. Step 6: Final answer
    x = 16,458.69

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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.