Home / 11,911.98-17,868.62-3,146.66

Finding the Fourth Proportional to 11,911.98, 17,868.62 and 3,146.66

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Solution

The fourth proportional to 11,911.98, 17,868.62 and 3,146.66 is: 4,720.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.98 : 17,868.62 = 3,146.66 : x
  2. Step 2: Convert to fraction form
    11,911.98/17,868.62 = 3,146.66/x
  3. Step 3: Cross multiply
    11,911.98x = 17,868.62 × 3,146.66
  4. Step 4: Simplify right side
    11,911.98x = 56,226,471.81
  5. Step 5: Solve for x
    x = 56,226,471.81/11,911.98
  6. Step 6: Final answer
    x = 4,720.16

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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.