Home / 11,943.81-17,915.20-3,178.73

Finding the Fourth Proportional to 11,943.81, 17,915.20 and 3,178.73

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Solution

The fourth proportional to 11,943.81, 17,915.20 and 3,178.73 is: 4,767.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.81 : 17,915.20 = 3,178.73 : x
  2. Step 2: Convert to fraction form
    11,943.81/17,915.20 = 3,178.73/x
  3. Step 3: Cross multiply
    11,943.81x = 17,915.20 × 3,178.73
  4. Step 4: Simplify right side
    11,943.81x = 56,947,620.54
  5. Step 5: Solve for x
    x = 56,947,620.54/11,943.81
  6. Step 6: Final answer
    x = 4,767.96

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1.5x scale

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.