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Finding the Third Proportional to 10,455 and 15,487.50

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Solution

The third proportional to 10,455 and 15,487.50 is: 22,942.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455 : 15,487.50 = 15,487.50 : x
  2. Step 2: Convert to fraction form
    10,455/15,487.50 = 15,487.50/x
  3. Step 3: Cross multiply
    10,455x = 15,487.50 × 15,487.50
  4. Step 4: Simplify right side
    10,455x = 239,862,656.25
  5. Step 5: Solve for x
    x = 239,862,656.25/10,455
  6. Step 6: Final answer
    x = 22,942.39

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.