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Finding the Third Proportional to 12,557 and 18,998

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Solution

The third proportional to 12,557 and 18,998 is: 28,742.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,557 : 18,998 = 18,998 : x
  2. Step 2: Convert to fraction form
    12,557/18,998 = 18,998/x
  3. Step 3: Cross multiply
    12,557x = 18,998 × 18,998
  4. Step 4: Simplify right side
    12,557x = 360,924,004
  5. Step 5: Solve for x
    x = 360,924,004/12,557
  6. Step 6: Final answer
    x = 28,742.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.