Home / 21,252.96-31,872.96-5,668.56

Finding the Fourth Proportional to 21,252.96, 31,872.96 and 5,668.56

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Solution

The fourth proportional to 21,252.96, 31,872.96 and 5,668.56 is: 8,501.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.96 : 31,872.96 = 5,668.56 : x
  2. Step 2: Convert to fraction form
    21,252.96/31,872.96 = 5,668.56/x
  3. Step 3: Cross multiply
    21,252.96x = 31,872.96 × 5,668.56
  4. Step 4: Simplify right side
    21,252.96x = 180,673,786.14
  5. Step 5: Solve for x
    x = 180,673,786.14/21,252.96
  6. Step 6: Final answer
    x = 8,501.11

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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.