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Finding the Third Proportional to 11,430 and 13,518

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Solution

The third proportional to 11,430 and 13,518 is: 15,987.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430 : 13,518 = 13,518 : x
  2. Step 2: Convert to fraction form
    11,430/13,518 = 13,518/x
  3. Step 3: Cross multiply
    11,430x = 13,518 × 13,518
  4. Step 4: Simplify right side
    11,430x = 182,736,324
  5. Step 5: Solve for x
    x = 182,736,324/11,430
  6. Step 6: Final answer
    x = 15,987.43

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.