Home / 20,916.90-31,375.56-5,334.54

Finding the Fourth Proportional to 20,916.90, 31,375.56 and 5,334.54

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Solution

The fourth proportional to 20,916.90, 31,375.56 and 5,334.54 is: 8,001.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.90 : 31,375.56 = 5,334.54 : x
  2. Step 2: Convert to fraction form
    20,916.90/31,375.56 = 5,334.54/x
  3. Step 3: Cross multiply
    20,916.90x = 31,375.56 × 5,334.54
  4. Step 4: Simplify right side
    20,916.90x = 167,374,179.84
  5. Step 5: Solve for x
    x = 167,374,179.84/20,916.90
  6. Step 6: Final answer
    x = 8,001.86

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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.