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Finding the Third Proportional to 15,725 and 23,789

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Solution

The third proportional to 15,725 and 23,789 is: 35,988.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725 : 23,789 = 23,789 : x
  2. Step 2: Convert to fraction form
    15,725/23,789 = 23,789/x
  3. Step 3: Cross multiply
    15,725x = 23,789 × 23,789
  4. Step 4: Simplify right side
    15,725x = 565,916,521
  5. Step 5: Solve for x
    x = 565,916,521/15,725
  6. Step 6: Final answer
    x = 35,988.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.