Home / 20,966.85-31,453.38-6,928.36

Finding the Fourth Proportional to 20,966.85, 31,453.38 and 6,928.36

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Solution

The fourth proportional to 20,966.85, 31,453.38 and 6,928.36 is: 10,393.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.85 : 31,453.38 = 6,928.36 : x
  2. Step 2: Convert to fraction form
    20,966.85/31,453.38 = 6,928.36/x
  3. Step 3: Cross multiply
    20,966.85x = 31,453.38 × 6,928.36
  4. Step 4: Simplify right side
    20,966.85x = 217,920,226.58
  5. Step 5: Solve for x
    x = 217,920,226.58/20,966.85
  6. Step 6: Final answer
    x = 10,393.56

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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.