Home / 12,582.78-18,872.04-3,815.58

Finding the Fourth Proportional to 12,582.78, 18,872.04 and 3,815.58

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Solution

The fourth proportional to 12,582.78, 18,872.04 and 3,815.58 is: 5,722.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,582.78 : 18,872.04 = 3,815.58 : x
  2. Step 2: Convert to fraction form
    12,582.78/18,872.04 = 3,815.58/x
  3. Step 3: Cross multiply
    12,582.78x = 18,872.04 × 3,815.58
  4. Step 4: Simplify right side
    12,582.78x = 72,007,778.38
  5. Step 5: Solve for x
    x = 72,007,778.38/12,582.78
  6. Step 6: Final answer
    x = 5,722.72

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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.