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Finding the Fourth Proportional to 12,187.88, 18,281.82 and 4,396.69

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Solution

The fourth proportional to 12,187.88, 18,281.82 and 4,396.69 is: 6,595.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.88 : 18,281.82 = 4,396.69 : x
  2. Step 2: Convert to fraction form
    12,187.88/18,281.82 = 4,396.69/x
  3. Step 3: Cross multiply
    12,187.88x = 18,281.82 × 4,396.69
  4. Step 4: Simplify right side
    12,187.88x = 80,379,495.18
  5. Step 5: Solve for x
    x = 80,379,495.18/12,187.88
  6. Step 6: Final answer
    x = 6,595.04

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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.