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Finding the Third Proportional to 7,929.25 and 12,347.75

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Solution

The third proportional to 7,929.25 and 12,347.75 is: 19,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.25 : 12,347.75 = 12,347.75 : x
  2. Step 2: Convert to fraction form
    7,929.25/12,347.75 = 12,347.75/x
  3. Step 3: Cross multiply
    7,929.25x = 12,347.75 × 12,347.75
  4. Step 4: Simplify right side
    7,929.25x = 152,466,930.06
  5. Step 5: Solve for x
    x = 152,466,930.06/7,929.25
  6. Step 6: Final answer
    x = 19,228.42

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.