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Finding the Third Proportional to 10,780 and 14,560

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Solution

The third proportional to 10,780 and 14,560 is: 19,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780 : 14,560 = 14,560 : x
  2. Step 2: Convert to fraction form
    10,780/14,560 = 14,560/x
  3. Step 3: Cross multiply
    10,780x = 14,560 × 14,560
  4. Step 4: Simplify right side
    10,780x = 211,993,600
  5. Step 5: Solve for x
    x = 211,993,600/10,780
  6. Step 6: Final answer
    x = 19,665.45

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.