Home / 12,119.67-18,153.11-7,425.38

Finding the Fourth Proportional to 12,119.67, 18,153.11 and 7,425.38

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Solution

The fourth proportional to 12,119.67, 18,153.11 and 7,425.38 is: 11,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.67 : 18,153.11 = 7,425.38 : x
  2. Step 2: Convert to fraction form
    12,119.67/18,153.11 = 7,425.38/x
  3. Step 3: Cross multiply
    12,119.67x = 18,153.11 × 7,425.38
  4. Step 4: Simplify right side
    12,119.67x = 134,793,803.88
  5. Step 5: Solve for x
    x = 134,793,803.88/12,119.67
  6. Step 6: Final answer
    x = 11,121.90

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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.