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Finding the Third Proportional to 15,219 and 31,153.50

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Solution

The third proportional to 15,219 and 31,153.50 is: 63,771.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219 : 31,153.50 = 31,153.50 : x
  2. Step 2: Convert to fraction form
    15,219/31,153.50 = 31,153.50/x
  3. Step 3: Cross multiply
    15,219x = 31,153.50 × 31,153.50
  4. Step 4: Simplify right side
    15,219x = 970,540,562.25
  5. Step 5: Solve for x
    x = 970,540,562.25/15,219
  6. Step 6: Final answer
    x = 63,771.64

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.