Home / 20,828.14-31,244.81-6,789.58

Finding the Fourth Proportional to 20,828.14, 31,244.81 and 6,789.58

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Solution

The fourth proportional to 20,828.14, 31,244.81 and 6,789.58 is: 10,185.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.14 : 31,244.81 = 6,789.58 : x
  2. Step 2: Convert to fraction form
    20,828.14/31,244.81 = 6,789.58/x
  3. Step 3: Cross multiply
    20,828.14x = 31,244.81 × 6,789.58
  4. Step 4: Simplify right side
    20,828.14x = 212,139,025.02
  5. Step 5: Solve for x
    x = 212,139,025.02/20,828.14
  6. Step 6: Final answer
    x = 10,185.21

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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.