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Finding the Third Proportional to 11,520 and 14,432

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Solution

The third proportional to 11,520 and 14,432 is: 18,080.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520 : 14,432 = 14,432 : x
  2. Step 2: Convert to fraction form
    11,520/14,432 = 14,432/x
  3. Step 3: Cross multiply
    11,520x = 14,432 × 14,432
  4. Step 4: Simplify right side
    11,520x = 208,282,624
  5. Step 5: Solve for x
    x = 208,282,624/11,520
  6. Step 6: Final answer
    x = 18,080.09

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Why These Related Problems?

These problems maintain the same ratio (1.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.