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Finding the Third Proportional to 7,477 and 11,730

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Solution

The third proportional to 7,477 and 11,730 is: 18,402.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477 : 11,730 = 11,730 : x
  2. Step 2: Convert to fraction form
    7,477/11,730 = 11,730/x
  3. Step 3: Cross multiply
    7,477x = 11,730 × 11,730
  4. Step 4: Simplify right side
    7,477x = 137,592,900
  5. Step 5: Solve for x
    x = 137,592,900/7,477
  6. Step 6: Final answer
    x = 18,402.15

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.