Home / 12,579.57-18,864.63-3,691.98

Finding the Fourth Proportional to 12,579.57, 18,864.63 and 3,691.98

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Solution

The fourth proportional to 12,579.57, 18,864.63 and 3,691.98 is: 5,536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.57 : 18,864.63 = 3,691.98 : x
  2. Step 2: Convert to fraction form
    12,579.57/18,864.63 = 3,691.98/x
  3. Step 3: Cross multiply
    12,579.57x = 18,864.63 × 3,691.98
  4. Step 4: Simplify right side
    12,579.57x = 69,647,836.67
  5. Step 5: Solve for x
    x = 69,647,836.67/12,579.57
  6. Step 6: Final answer
    x = 5,536.58

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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.