Home / 12,676.79-19,013.94-3,909.35

Finding the Fourth Proportional to 12,676.79, 19,013.94 and 3,909.35

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Solution

The fourth proportional to 12,676.79, 19,013.94 and 3,909.35 is: 5,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676.79 : 19,013.94 = 3,909.35 : x
  2. Step 2: Convert to fraction form
    12,676.79/19,013.94 = 3,909.35/x
  3. Step 3: Cross multiply
    12,676.79x = 19,013.94 × 3,909.35
  4. Step 4: Simplify right side
    12,676.79x = 74,332,051.27
  5. Step 5: Solve for x
    x = 74,332,051.27/12,676.79
  6. Step 6: Final answer
    x = 5,863.64

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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.