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Finding the Third Proportional to 15,312 and 20,181

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Solution

The third proportional to 15,312 and 20,181 is: 26,598.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312 : 20,181 = 20,181 : x
  2. Step 2: Convert to fraction form
    15,312/20,181 = 20,181/x
  3. Step 3: Cross multiply
    15,312x = 20,181 × 20,181
  4. Step 4: Simplify right side
    15,312x = 407,272,761
  5. Step 5: Solve for x
    x = 407,272,761/15,312
  6. Step 6: Final answer
    x = 26,598.27

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.