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Finding the Third Proportional to 11,100 and 14,490

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Solution

The third proportional to 11,100 and 14,490 is: 18,915.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,100 : 14,490 = 14,490 : x
  2. Step 2: Convert to fraction form
    11,100/14,490 = 14,490/x
  3. Step 3: Cross multiply
    11,100x = 14,490 × 14,490
  4. Step 4: Simplify right side
    11,100x = 209,960,100
  5. Step 5: Solve for x
    x = 209,960,100/11,100
  6. Step 6: Final answer
    x = 18,915.32

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.