Home / 11,977.75-17,966.93-4,186.56

Finding the Fourth Proportional to 11,977.75, 17,966.93 and 4,186.56

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Solution

The fourth proportional to 11,977.75, 17,966.93 and 4,186.56 is: 6,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,977.75 : 17,966.93 = 4,186.56 : x
  2. Step 2: Convert to fraction form
    11,977.75/17,966.93 = 4,186.56/x
  3. Step 3: Cross multiply
    11,977.75x = 17,966.93 × 4,186.56
  4. Step 4: Simplify right side
    11,977.75x = 75,219,630.46
  5. Step 5: Solve for x
    x = 75,219,630.46/11,977.75
  6. Step 6: Final answer
    x = 6,279.95

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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.