Home / 13,787.26-20,673.74-6,764.20

Finding the Fourth Proportional to 13,787.26, 20,673.74 and 6,764.20

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Solution

The fourth proportional to 13,787.26, 20,673.74 and 6,764.20 is: 10,142.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.26 : 20,673.74 = 6,764.20 : x
  2. Step 2: Convert to fraction form
    13,787.26/20,673.74 = 6,764.20/x
  3. Step 3: Cross multiply
    13,787.26x = 20,673.74 × 6,764.20
  4. Step 4: Simplify right side
    13,787.26x = 139,841,278.29
  5. Step 5: Solve for x
    x = 139,841,278.29/13,787.26
  6. Step 6: Final answer
    x = 10,142.79

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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.