Home / 12,134.74-18,202.10-3,815.42

Finding the Fourth Proportional to 12,134.74, 18,202.10 and 3,815.42

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Solution

The fourth proportional to 12,134.74, 18,202.10 and 3,815.42 is: 5,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,134.74 : 18,202.10 = 3,815.42 : x
  2. Step 2: Convert to fraction form
    12,134.74/18,202.10 = 3,815.42/x
  3. Step 3: Cross multiply
    12,134.74x = 18,202.10 × 3,815.42
  4. Step 4: Simplify right side
    12,134.74x = 69,448,656.38
  5. Step 5: Solve for x
    x = 69,448,656.38/12,134.74
  6. Step 6: Final answer
    x = 5,723.13

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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.