Home / 10,821.66-16,231.50-3,426

Finding the Fourth Proportional to 10,821.66, 16,231.50 and 3,426

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Solution

The fourth proportional to 10,821.66, 16,231.50 and 3,426 is: 5,138.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.66 : 16,231.50 = 3,426 : x
  2. Step 2: Convert to fraction form
    10,821.66/16,231.50 = 3,426/x
  3. Step 3: Cross multiply
    10,821.66x = 16,231.50 × 3,426
  4. Step 4: Simplify right side
    10,821.66x = 55,609,119
  5. Step 5: Solve for x
    x = 55,609,119/10,821.66
  6. Step 6: Final answer
    x = 5,138.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.