Home / 12,078.05-18,122.87-6,234.66

Finding the Fourth Proportional to 12,078.05, 18,122.87 and 6,234.66

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Solution

The fourth proportional to 12,078.05, 18,122.87 and 6,234.66 is: 9,354.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.05 : 18,122.87 = 6,234.66 : x
  2. Step 2: Convert to fraction form
    12,078.05/18,122.87 = 6,234.66/x
  3. Step 3: Cross multiply
    12,078.05x = 18,122.87 × 6,234.66
  4. Step 4: Simplify right side
    12,078.05x = 112,989,932.67
  5. Step 5: Solve for x
    x = 112,989,932.67/12,078.05
  6. Step 6: Final answer
    x = 9,354.98

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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.