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Finding the Third Proportional to 12,298.50 and 15,765.75

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Solution

The third proportional to 12,298.50 and 15,765.75 is: 20,210.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,298.50 : 15,765.75 = 15,765.75 : x
  2. Step 2: Convert to fraction form
    12,298.50/15,765.75 = 15,765.75/x
  3. Step 3: Cross multiply
    12,298.50x = 15,765.75 × 15,765.75
  4. Step 4: Simplify right side
    12,298.50x = 248,558,873.06
  5. Step 5: Solve for x
    x = 248,558,873.06/12,298.50
  6. Step 6: Final answer
    x = 20,210.50

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.