Home / 20,896.38-31,343.46-6,854.56

Finding the Fourth Proportional to 20,896.38, 31,343.46 and 6,854.56

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Solution

The fourth proportional to 20,896.38, 31,343.46 and 6,854.56 is: 10,281.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.38 : 31,343.46 = 6,854.56 : x
  2. Step 2: Convert to fraction form
    20,896.38/31,343.46 = 6,854.56/x
  3. Step 3: Cross multiply
    20,896.38x = 31,343.46 × 6,854.56
  4. Step 4: Simplify right side
    20,896.38x = 214,845,580.95
  5. Step 5: Solve for x
    x = 214,845,580.95/20,896.38
  6. Step 6: Final answer
    x = 10,281.47

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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.