Home / 11,977.64-17,966.49-4,186.45

Finding the Fourth Proportional to 11,977.64, 17,966.49 and 4,186.45

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Solution

The fourth proportional to 11,977.64, 17,966.49 and 4,186.45 is: 6,279.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,977.64 : 17,966.49 = 4,186.45 : x
  2. Step 2: Convert to fraction form
    11,977.64/17,966.49 = 4,186.45/x
  3. Step 3: Cross multiply
    11,977.64x = 17,966.49 × 4,186.45
  4. Step 4: Simplify right side
    11,977.64x = 75,215,812.06
  5. Step 5: Solve for x
    x = 75,215,812.06/11,977.64
  6. Step 6: Final answer
    x = 6,279.69

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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.