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Finding the Third Proportional to 10,515 and 14,812.50

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Solution

The third proportional to 10,515 and 14,812.50 is: 20,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515 : 14,812.50 = 14,812.50 : x
  2. Step 2: Convert to fraction form
    10,515/14,812.50 = 14,812.50/x
  3. Step 3: Cross multiply
    10,515x = 14,812.50 × 14,812.50
  4. Step 4: Simplify right side
    10,515x = 219,410,156.25
  5. Step 5: Solve for x
    x = 219,410,156.25/10,515
  6. Step 6: Final answer
    x = 20,866.40

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.