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Finding the Third Proportional to 8,903 and 13,779.50

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Solution

The third proportional to 8,903 and 13,779.50 is: 21,327.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903 : 13,779.50 = 13,779.50 : x
  2. Step 2: Convert to fraction form
    8,903/13,779.50 = 13,779.50/x
  3. Step 3: Cross multiply
    8,903x = 13,779.50 × 13,779.50
  4. Step 4: Simplify right side
    8,903x = 189,874,620.25
  5. Step 5: Solve for x
    x = 189,874,620.25/8,903
  6. Step 6: Final answer
    x = 21,327.04

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.