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Finding the Third Proportional to 11,581 and 18,421.50

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Solution

The third proportional to 11,581 and 18,421.50 is: 29,302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,581 : 18,421.50 = 18,421.50 : x
  2. Step 2: Convert to fraction form
    11,581/18,421.50 = 18,421.50/x
  3. Step 3: Cross multiply
    11,581x = 18,421.50 × 18,421.50
  4. Step 4: Simplify right side
    11,581x = 339,351,662.25
  5. Step 5: Solve for x
    x = 339,351,662.25/11,581
  6. Step 6: Final answer
    x = 29,302.45

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.