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Finding the Third Proportional to 13,878 and 14,862

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Solution

The third proportional to 13,878 and 14,862 is: 15,915.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878 : 14,862 = 14,862 : x
  2. Step 2: Convert to fraction form
    13,878/14,862 = 14,862/x
  3. Step 3: Cross multiply
    13,878x = 14,862 × 14,862
  4. Step 4: Simplify right side
    13,878x = 220,879,044
  5. Step 5: Solve for x
    x = 220,879,044/13,878
  6. Step 6: Final answer
    x = 15,915.77

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.