Home / 11,325.34-16,981.80-3,929.14

Finding the Fourth Proportional to 11,325.34, 16,981.80 and 3,929.14

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Solution

The fourth proportional to 11,325.34, 16,981.80 and 3,929.14 is: 5,891.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.34 : 16,981.80 = 3,929.14 : x
  2. Step 2: Convert to fraction form
    11,325.34/16,981.80 = 3,929.14/x
  3. Step 3: Cross multiply
    11,325.34x = 16,981.80 × 3,929.14
  4. Step 4: Simplify right side
    11,325.34x = 66,723,869.65
  5. Step 5: Solve for x
    x = 66,723,869.65/11,325.34
  6. Step 6: Final answer
    x = 5,891.56

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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.