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Finding the Fourth Proportional to 12,453.80, 18,675.16 and 6,609.08

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Solution

The fourth proportional to 12,453.80, 18,675.16 and 6,609.08 is: 9,910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.80 : 18,675.16 = 6,609.08 : x
  2. Step 2: Convert to fraction form
    12,453.80/18,675.16 = 6,609.08/x
  3. Step 3: Cross multiply
    12,453.80x = 18,675.16 × 6,609.08
  4. Step 4: Simplify right side
    12,453.80x = 123,425,626.45
  5. Step 5: Solve for x
    x = 123,425,626.45/12,453.80
  6. Step 6: Final answer
    x = 9,910.68

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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.