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Finding the Third Proportional to 12,438.50 and 19,260.50

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Solution

The third proportional to 12,438.50 and 19,260.50 is: 29,824.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.50 : 19,260.50 = 19,260.50 : x
  2. Step 2: Convert to fraction form
    12,438.50/19,260.50 = 19,260.50/x
  3. Step 3: Cross multiply
    12,438.50x = 19,260.50 × 19,260.50
  4. Step 4: Simplify right side
    12,438.50x = 370,966,860.25
  5. Step 5: Solve for x
    x = 370,966,860.25/12,438.50
  6. Step 6: Final answer
    x = 29,824.08

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.