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Finding the Third Proportional to 15,128 and 23,478

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Solution

The third proportional to 15,128 and 23,478 is: 36,436.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128 : 23,478 = 23,478 : x
  2. Step 2: Convert to fraction form
    15,128/23,478 = 23,478/x
  3. Step 3: Cross multiply
    15,128x = 23,478 × 23,478
  4. Step 4: Simplify right side
    15,128x = 551,216,484
  5. Step 5: Solve for x
    x = 551,216,484/15,128
  6. Step 6: Final answer
    x = 36,436.84

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.