Home / 11,142-16,719.94-10,103.89

Finding the Fourth Proportional to 11,142, 16,719.94 and 10,103.89

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Solution

The fourth proportional to 11,142, 16,719.94 and 10,103.89 is: 15,162.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142 : 16,719.94 = 10,103.89 : x
  2. Step 2: Convert to fraction form
    11,142/16,719.94 = 10,103.89/x
  3. Step 3: Cross multiply
    11,142x = 16,719.94 × 10,103.89
  4. Step 4: Simplify right side
    11,142x = 168,936,434.57
  5. Step 5: Solve for x
    x = 168,936,434.57/11,142
  6. Step 6: Final answer
    x = 15,162.13

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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.