Home / 21,272.04-29,351.82-12,318

Finding the Fourth Proportional to 21,272.04, 29,351.82 and 12,318

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Solution

The fourth proportional to 21,272.04, 29,351.82 and 12,318 is: 16,996.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.04 : 29,351.82 = 12,318 : x
  2. Step 2: Convert to fraction form
    21,272.04/29,351.82 = 12,318/x
  3. Step 3: Cross multiply
    21,272.04x = 29,351.82 × 12,318
  4. Step 4: Simplify right side
    21,272.04x = 361,555,718.76
  5. Step 5: Solve for x
    x = 361,555,718.76/21,272.04
  6. Step 6: Final answer
    x = 16,996.76

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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.