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Finding the Third Proportional to 12,719.50 and 19,457

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Solution

The third proportional to 12,719.50 and 19,457 is: 29,763.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.50 : 19,457 = 19,457 : x
  2. Step 2: Convert to fraction form
    12,719.50/19,457 = 19,457/x
  3. Step 3: Cross multiply
    12,719.50x = 19,457 × 19,457
  4. Step 4: Simplify right side
    12,719.50x = 378,574,849
  5. Step 5: Solve for x
    x = 378,574,849/12,719.50
  6. Step 6: Final answer
    x = 29,763.34

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.