Home / 20,875.05-31,324.86-7,736.58

Finding the Fourth Proportional to 20,875.05, 31,324.86 and 7,736.58

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Solution

The fourth proportional to 20,875.05, 31,324.86 and 7,736.58 is: 11,609.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.05 : 31,324.86 = 7,736.58 : x
  2. Step 2: Convert to fraction form
    20,875.05/31,324.86 = 7,736.58/x
  3. Step 3: Cross multiply
    20,875.05x = 31,324.86 × 7,736.58
  4. Step 4: Simplify right side
    20,875.05x = 242,347,285.38
  5. Step 5: Solve for x
    x = 242,347,285.38/20,875.05
  6. Step 6: Final answer
    x = 11,609.42

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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.