Home / 11,919.74-17,880.39-3,154.43

Finding the Fourth Proportional to 11,919.74, 17,880.39 and 3,154.43

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Solution

The fourth proportional to 11,919.74, 17,880.39 and 3,154.43 is: 4,731.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.74 : 17,880.39 = 3,154.43 : x
  2. Step 2: Convert to fraction form
    11,919.74/17,880.39 = 3,154.43/x
  3. Step 3: Cross multiply
    11,919.74x = 17,880.39 × 3,154.43
  4. Step 4: Simplify right side
    11,919.74x = 56,402,438.63
  5. Step 5: Solve for x
    x = 56,402,438.63/11,919.74
  6. Step 6: Final answer
    x = 4,731.85

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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.