Home / 18,691.14-25,785.98-11,975.34

Finding the Fourth Proportional to 18,691.14, 25,785.98 and 11,975.34

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Solution

The fourth proportional to 18,691.14, 25,785.98 and 11,975.34 is: 16,520.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.14 : 25,785.98 = 11,975.34 : x
  2. Step 2: Convert to fraction form
    18,691.14/25,785.98 = 11,975.34/x
  3. Step 3: Cross multiply
    18,691.14x = 25,785.98 × 11,975.34
  4. Step 4: Simplify right side
    18,691.14x = 308,795,877.73
  5. Step 5: Solve for x
    x = 308,795,877.73/18,691.14
  6. Step 6: Final answer
    x = 16,520.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.