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Finding the Third Proportional to 5,457 and 13,039.50

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Solution

The third proportional to 5,457 and 13,039.50 is: 31,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457 : 13,039.50 = 13,039.50 : x
  2. Step 2: Convert to fraction form
    5,457/13,039.50 = 13,039.50/x
  3. Step 3: Cross multiply
    5,457x = 13,039.50 × 13,039.50
  4. Step 4: Simplify right side
    5,457x = 170,028,560.25
  5. Step 5: Solve for x
    x = 170,028,560.25/5,457
  6. Step 6: Final answer
    x = 31,157.88

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.