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Finding the Third Proportional to 13,212 and 14,316

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Solution

The third proportional to 13,212 and 14,316 is: 15,512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212 : 14,316 = 14,316 : x
  2. Step 2: Convert to fraction form
    13,212/14,316 = 14,316/x
  3. Step 3: Cross multiply
    13,212x = 14,316 × 14,316
  4. Step 4: Simplify right side
    13,212x = 204,947,856
  5. Step 5: Solve for x
    x = 204,947,856/13,212
  6. Step 6: Final answer
    x = 15,512.25

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.