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Finding the Fourth Proportional to 12,167.05, 18,234.05 and 6,899.57

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Solution

The fourth proportional to 12,167.05, 18,234.05 and 6,899.57 is: 10,339.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.05 : 18,234.05 = 6,899.57 : x
  2. Step 2: Convert to fraction form
    12,167.05/18,234.05 = 6,899.57/x
  3. Step 3: Cross multiply
    12,167.05x = 18,234.05 × 6,899.57
  4. Step 4: Simplify right side
    12,167.05x = 125,807,104.36
  5. Step 5: Solve for x
    x = 125,807,104.36/12,167.05
  6. Step 6: Final answer
    x = 10,339.98

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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.