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Finding the Third Proportional to 13,547 and 20,321

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Solution

The third proportional to 13,547 and 20,321 is: 30,482.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547 : 20,321 = 20,321 : x
  2. Step 2: Convert to fraction form
    13,547/20,321 = 20,321/x
  3. Step 3: Cross multiply
    13,547x = 20,321 × 20,321
  4. Step 4: Simplify right side
    13,547x = 412,943,041
  5. Step 5: Solve for x
    x = 412,943,041/13,547
  6. Step 6: Final answer
    x = 30,482.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.