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Finding the Third Proportional to 14,430 and 31,507

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Solution

The third proportional to 14,430 and 31,507 is: 68,793.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,430 : 31,507 = 31,507 : x
  2. Step 2: Convert to fraction form
    14,430/31,507 = 31,507/x
  3. Step 3: Cross multiply
    14,430x = 31,507 × 31,507
  4. Step 4: Simplify right side
    14,430x = 992,691,049
  5. Step 5: Solve for x
    x = 992,691,049/14,430
  6. Step 6: Final answer
    x = 68,793.56

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.