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Finding the Third Proportional to 10,779.75 and 12,966.75

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Solution

The third proportional to 10,779.75 and 12,966.75 is: 15,597.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,779.75 : 12,966.75 = 12,966.75 : x
  2. Step 2: Convert to fraction form
    10,779.75/12,966.75 = 12,966.75/x
  3. Step 3: Cross multiply
    10,779.75x = 12,966.75 × 12,966.75
  4. Step 4: Simplify right side
    10,779.75x = 168,136,605.56
  5. Step 5: Solve for x
    x = 168,136,605.56/10,779.75
  6. Step 6: Final answer
    x = 15,597.45

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.