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Finding the Fourth Proportional to 12,609.67, 18,914.48 and 7,613.03

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Solution

The fourth proportional to 12,609.67, 18,914.48 and 7,613.03 is: 11,419.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.67 : 18,914.48 = 7,613.03 : x
  2. Step 2: Convert to fraction form
    12,609.67/18,914.48 = 7,613.03/x
  3. Step 3: Cross multiply
    12,609.67x = 18,914.48 × 7,613.03
  4. Step 4: Simplify right side
    12,609.67x = 143,996,512.90
  5. Step 5: Solve for x
    x = 143,996,512.90/12,609.67
  6. Step 6: Final answer
    x = 11,419.53

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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.