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Finding the Third Proportional to 8,628.19 and 12,779.44

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Solution

The third proportional to 8,628.19 and 12,779.44 is: 18,927.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.19 : 12,779.44 = 12,779.44 : x
  2. Step 2: Convert to fraction form
    8,628.19/12,779.44 = 12,779.44/x
  3. Step 3: Cross multiply
    8,628.19x = 12,779.44 × 12,779.44
  4. Step 4: Simplify right side
    8,628.19x = 163,314,022.82
  5. Step 5: Solve for x
    x = 163,314,022.82/8,628.19
  6. Step 6: Final answer
    x = 18,927.96

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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.