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Finding the Third Proportional to 14,688 and 15,930

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Solution

The third proportional to 14,688 and 15,930 is: 17,277.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688 : 15,930 = 15,930 : x
  2. Step 2: Convert to fraction form
    14,688/15,930 = 15,930/x
  3. Step 3: Cross multiply
    14,688x = 15,930 × 15,930
  4. Step 4: Simplify right side
    14,688x = 253,764,900
  5. Step 5: Solve for x
    x = 253,764,900/14,688
  6. Step 6: Final answer
    x = 17,277.02

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.