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Finding the Third Proportional to 19,989 and 30,253.50

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Solution

The third proportional to 19,989 and 30,253.50 is: 45,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989 : 30,253.50 = 30,253.50 : x
  2. Step 2: Convert to fraction form
    19,989/30,253.50 = 30,253.50/x
  3. Step 3: Cross multiply
    19,989x = 30,253.50 × 30,253.50
  4. Step 4: Simplify right side
    19,989x = 915,274,262.25
  5. Step 5: Solve for x
    x = 915,274,262.25/19,989
  6. Step 6: Final answer
    x = 45,788.90

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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.