Home / 11,938.88-17,908.50-4,147.88

Finding the Fourth Proportional to 11,938.88, 17,908.50 and 4,147.88

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Solution

The fourth proportional to 11,938.88, 17,908.50 and 4,147.88 is: 6,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.88 : 17,908.50 = 4,147.88 : x
  2. Step 2: Convert to fraction form
    11,938.88/17,908.50 = 4,147.88/x
  3. Step 3: Cross multiply
    11,938.88x = 17,908.50 × 4,147.88
  4. Step 4: Simplify right side
    11,938.88x = 74,282,308.98
  5. Step 5: Solve for x
    x = 74,282,308.98/11,938.88
  6. Step 6: Final answer
    x = 6,221.88

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1.5x scale

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.