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Finding the Third Proportional to 10,455 and 13,999.50

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Solution

The third proportional to 10,455 and 13,999.50 is: 18,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455 : 13,999.50 = 13,999.50 : x
  2. Step 2: Convert to fraction form
    10,455/13,999.50 = 13,999.50/x
  3. Step 3: Cross multiply
    10,455x = 13,999.50 × 13,999.50
  4. Step 4: Simplify right side
    10,455x = 195,986,000.25
  5. Step 5: Solve for x
    x = 195,986,000.25/10,455
  6. Step 6: Final answer
    x = 18,745.67

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.