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Finding the Third Proportional to 13,020 and 28,200

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Solution

The third proportional to 13,020 and 28,200 is: 61,078.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020 : 28,200 = 28,200 : x
  2. Step 2: Convert to fraction form
    13,020/28,200 = 28,200/x
  3. Step 3: Cross multiply
    13,020x = 28,200 × 28,200
  4. Step 4: Simplify right side
    13,020x = 795,240,000
  5. Step 5: Solve for x
    x = 795,240,000/13,020
  6. Step 6: Final answer
    x = 61,078.34

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.