Home / 12,140.85-18,183.04-11,719.93

Finding the Fourth Proportional to 12,140.85, 18,183.04 and 11,719.93

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Solution

The fourth proportional to 12,140.85, 18,183.04 and 11,719.93 is: 17,552.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.85 : 18,183.04 = 11,719.93 : x
  2. Step 2: Convert to fraction form
    12,140.85/18,183.04 = 11,719.93/x
  3. Step 3: Cross multiply
    12,140.85x = 18,183.04 × 11,719.93
  4. Step 4: Simplify right side
    12,140.85x = 213,103,972.16
  5. Step 5: Solve for x
    x = 213,103,972.16/12,140.85
  6. Step 6: Final answer
    x = 17,552.64

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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.