Home / 12,209.78-18,273.07-10,237.64

Finding the Fourth Proportional to 12,209.78, 18,273.07 and 10,237.64

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Solution

The fourth proportional to 12,209.78, 18,273.07 and 10,237.64 is: 15,321.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.78 : 18,273.07 = 10,237.64 : x
  2. Step 2: Convert to fraction form
    12,209.78/18,273.07 = 10,237.64/x
  3. Step 3: Cross multiply
    12,209.78x = 18,273.07 × 10,237.64
  4. Step 4: Simplify right side
    12,209.78x = 187,073,049.96
  5. Step 5: Solve for x
    x = 187,073,049.96/12,209.78
  6. Step 6: Final answer
    x = 15,321.57

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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.