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Finding the Third Proportional to 18,520.13 and 28,720.50

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Solution

The third proportional to 18,520.13 and 28,720.50 is: 44,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.13 : 28,720.50 = 28,720.50 : x
  2. Step 2: Convert to fraction form
    18,520.13/28,720.50 = 28,720.50/x
  3. Step 3: Cross multiply
    18,520.13x = 28,720.50 × 28,720.50
  4. Step 4: Simplify right side
    18,520.13x = 824,867,120.25
  5. Step 5: Solve for x
    x = 824,867,120.25/18,520.13
  6. Step 6: Final answer
    x = 44,538.96

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